chromium-140.0.7327.6

3 files changed, 474 insertions, 14 deletions

diff --git a/www-client/chromium/Manifest b/www-client/chromium/Manifest
index ae88f10..b453d84 100644
--- a/www-client/chromium/Manifest
+++ b/www-client/chromium/Manifest
@@ -11,6 +11,7 @@ AUX chromium-139-compiler.patch 17165 BLAKE2B b9ffbe4bb34d21819ea0ff3f2447e9e9ea
 AUX chromium-139-mv2-ungoogled-r1.patch 7358 BLAKE2B 5f48c890e4fe1c22071ee9e4275203318b90143d9e4996688409f7df0232b3dc3dde7ef1a9c55ef75ac83c2aa411ed687321ac54da466f6b2c70b34fa6bcfd92 SHA512 d30c4b341774c2afa95ca466d879ccad38ee599476b56f30a5fdbfcd014c8ef463cc38a032af344e0d93cd958468305de24b9ec7ca49834be598bf92578b80a2
 AUX chromium-139-mv2-ungoogled.patch 7365 BLAKE2B bec1adf79214352df32e2e7dc2ba27b773e840f8d8ef70d79096b3bf5822f5116591dae436bcb8caaf0ea3669004a9638719ec4947a704d536df3b83af05da21 SHA512 857f2ad5b4f0b9ede6018142fbced266fb09065f35f1609e66f6da0e128d40917f242923516c048d9341debdb02ef4acee33181eefcb51e797aa0754f1c94821
 AUX chromium-139-protobuf-RepeatedPtrField-export.patch 776 BLAKE2B aa491b162f812832eb03785fa14e969f87fffbaa0d61d04c3a16132f84e407aee49fdcd1e83d8ca944923f6631abdf22c13a5a52353e33f381bf208ee3401934 SHA512 a3e1e70876176ee239f548cf92da9f5bf678d568a50b3cb1e64bce7d1c61be2d3ee6edd0e6189e6cc2a21f59f3b0393280b280fdde5e4c3c0337a2327f6a515a
+AUX chromium-140-compiler-r1.patch 17997 BLAKE2B b116858756b692550bb087497a5c3492307e4387390c6cd7b7a8e71862398baaa229116e3d8dad3300c594a5347b625e10098bc52f62d9d12540b3d0f6209f85 SHA512 296685ba8dc911029e46369b506d3478547208e563a060ade3a86b14fdc9b5074d85a9e6a55d6525ba7514f6133b1b773cc1b863449f3fefb3e0875456904d75
 AUX chromium-140-compiler.patch 17875 BLAKE2B 92f700b2c0b40c382e588eb41a965947b2e45f2893c7991a2749057c39b2aa16b9a88ad086d06ef89b11705ff2b0eb356f307910d196fe39decd7f327347f8fa SHA512 58e1240cdea826b0679db67f70a34b1c3e7e667415e0a98b8d33ce6f3125cdc1c0e2a60ae8a363964e0407e12e03fd4b3dc652f45da0f3a70dc959d53355ad19
 AUX chromium-140-rust-1.8x.patch 626 BLAKE2B 3dcd6ace2bd8e8072e0a12eb8035bfc060f59fe55b20e623ff16897bf79596991773eab4f1e7a1d1b8334a2b3193f208524f4397ba1ff10e78a70f94c7ff7723 SHA512 ecc8cdef7409f6fc2a0af5ea8f9909d30b267457120e0a87702726a213446607c9473b521420d6738d1113c6697bd0a0716d9a2097d70b9d396b3dc35d7c7660
 AUX chromium-browser.xml 407 BLAKE2B 168d78b0855546ca559cfb51aff0bc85d5e6ae974c25eb76e4a02f6d11659489c6e40397a0b2f7bc1fda336fd2c6dd8c863fccc3340719210b41c7fef51927f4 SHA512 b767fb4fd1925029d95560fc14cb7ab12ae43b2fe923e92d75e733b9723cbe1dcdf6df041a2b62554e98b79b47ef3f6028c773e72e6fd53166a021d49657aeca
@@ -19,8 +20,8 @@ AUX chromium-launcher-r7.sh 1631 BLAKE2B ae28d758264446511fd2b64ba69fe920144b351
 AUX chromium-shim_headers.patch 1510 BLAKE2B 9716cd250b249c6255aca01a385ef8a2a6f1df9ea3cf7499715543c14f8be62fd323b6048b890aa2be45891e7a765d92de3f41c3b3a88c08dae4b806c048e20f SHA512 c74bcf690a41b4f9b364477d23408d493aa674e3bd014940098a594471297c2a425241f908510061b5f11c9cfe009c4a803370edd757d3c0ab8d9c0cc128135c
 AUX chromium-use-oauth2-client-switches-as-default.patch 1085 BLAKE2B baf3c463305934c126af4f7c5be305863edc7eec3add5b5ada30565b49b5944021eb40f1a9643e7eec3f973c502d9b02426f00b760570fcea5f1509219e41c6f SHA512 fe2878ee45778bac894ea17a668511d27ad2ca40988d5f11439790b700bfefd6560f3931415b4e6c543fcbbfc7cfef55cc757ed4ace1d111039ae78c46b81945
 AUX chromium.default 148 BLAKE2B 5ee5b582c59a6e4bef87bbb0e232e2470ad412b1fbbb3b9af6ef7153edb55c5b9080cc16a5a115b0c5b3c381aa87ce57a7b12bdd2070e67dac10a6c2995ddbaf SHA512 0d4849e03592fb58b05e62a43021eca7e61615616c8907c3b2e445402e03adaf9e8fa25b0a745d6c31eb037456215cc02b59e345a3a06d932e76cf990c92d739
-DIST chromium-139.0.7246.0.tar.xz 7233007432 BLAKE2B 5529a2a430dbadb53c8afb9be7550b5b567378fe01ef27ae7d12b2bada0da190a408c8638f95ddb95f2fe5b006316873db61303d887dfdbee8f5d39ab8f4cb93 SHA512 683bfbe001524cec281c6b9e1330a8e3808d71e9d56db1fe04d2274f1d0d01951b325faf2af1d7c0268e2c1d154d646761467e851653db9e9ccadf9f78bf3c56
 DIST chromium-140.0.7299.0.tar.xz 7321153548 BLAKE2B 653f6c8f4bc42d31c91191ebdb5191d59172d9a0193b9bc69769f5d7b618e7dcda53777f22fe073b9a6186f9998c73a3e5232ad21aacf205902beeaeaacb4f72 SHA512 bb4439965041b8a8169516c74cc77106c990e3d324a577bf343c6b7f77c9c1b0862624dfecc2f2bc363b92c69a8723934fbc22a630438a57876cd340d86bf236
+DIST chromium-140.0.7327.6.tar.xz 7362455388 BLAKE2B edf732e6395f765bc02883078741ca2e7300bad7f8602e42fd37a8d5875a30cbdf0034b55881281d03198af6697f2c24e457a25c08173632e332b27bc18f1552 SHA512 b9e40cd1613ccd7680202866e35b5446d883d9e5f5620ff48ba30eef0c657799f7f047b0ccb535888e1d705bdf63075ae4c771ad46f7c58efcd996e8993633c2
 DIST chromium-profiler-0.2.tar 259952640 BLAKE2B 5e82389fce00b267280d633b26551231c558b80f0c92cd7d60271095a3503365ab673e7a46dc5f74f8a82db1f21262cb24dcc0531d954bab5fb3b175dab3394d SHA512 9fa89a5ab728419683e7495ae676567480987d68a2d589f2aa97bfcbcf123f3c8f97f8bca5f65e5e3f6e41475535add473ded83b9c7a33bb4746a9d05b298a6c
-EBUILD chromium-139.0.7246.0.ebuild 40548 BLAKE2B 3c6f496e780b9b6cfe19f128e8d52c8a5e4b2b4eb8ff08a9b9d00365a2abb43af090fb5c99e53dd11181ad599be4572e5e18eabfbf2cb45e2ba5b6b730fa504e SHA512 1bab5ac1a9c22635c357f5fe0372b4447daba09b27dc5821d6233390ea07634fcbc4b2bf0d328163209c3694ae750d17695c8bc65d84519c75e14f287c0d8709
 EBUILD chromium-140.0.7299.0.ebuild 40695 BLAKE2B 3e05aeb987c2d21aa8e89c98bf932eb537d2b85386e6a7aeb917100cb8d842654c9e3951d58f17440bebfac6741d31ccd111231a7e564ff8cbc03d466b9552cc SHA512 17d4e2ae546fd43ea4ed280d690520412b4fddac6aa9104c0dbc92c9252ea63a3a982208ea2760eb5177f3a33b2d02ed1218a950915c4ef7bc6b0c8af9c4d3d6
+EBUILD chromium-140.0.7327.6.ebuild 40698 BLAKE2B 012d045f1891fda96744db7416f459ee856cb9770bbf0e24347560df014df944ece71f8fc3284215f6e6b623528481d12bc9a7d2d94cb9a60e30bb055e227426 SHA512 0bb264c252dc6c929a2031f6cea67f9d90f6aaefbe47c62cd8afc2f88702141b15bd4f99854251bb966c1a56d68484976f259c998dd462f071f85aeed74c8ac6
diff --git a/www-client/chromium/chromium-139.0.7246.0.ebuild b/www-client/chromium/chromium-140.0.7327.6.ebuild
index 939bb60..de9e68c 100644
--- a/www-client/chromium/chromium-139.0.7246.0.ebuild
+++ b/www-client/chromium/chromium-140.0.7327.6.ebuild
@@ -314,12 +314,13 @@ src_prepare() {
 
 	local PATCHES=(
 		"${FILESDIR}/chromium-139-protobuf-RepeatedPtrField-export.patch"
-		"${FILESDIR}/chromium-139-compiler-r1.patch"
+		"${FILESDIR}/chromium-140-compiler-r1.patch"
 		"${FILESDIR}/chromium-119-minizip.patch"
 		"${FILESDIR}/chromium-118-material-color-utils.patch"
 		"${FILESDIR}/chromium-126-freetype-blink.patch"
 		"${FILESDIR}/chromium-124-metrics-histograms-nodepotbin.patch"
 		"${FILESDIR}/chromium-138-gn-exec_script_allowlist.patch"
+		"${FILESDIR}/chromium-140-rust-1.8x.patch"
 		"${FILESDIR}/chromium-139-mv2-ungoogled-r1.patch"
 
 		"${FILESDIR}/chromium-111-InkDropHost-crash.patch"
@@ -434,6 +435,7 @@ src_prepare() {
 		third_party/devtools-frontend/src/front_end/third_party/puppeteer/package/lib/esm/third_party/mitt
 		third_party/devtools-frontend/src/front_end/third_party/puppeteer/package/lib/esm/third_party/parsel-js
 		third_party/devtools-frontend/src/front_end/third_party/puppeteer/package/lib/esm/third_party/rxjs
+		third_party/devtools-frontend/src/front_end/third_party/source-map-scopes-codec
 		third_party/devtools-frontend/src/front_end/third_party/third-party-web
 		third_party/devtools-frontend/src/front_end/third_party/vscode.web-custom-data
 		third_party/devtools-frontend/src/front_end/third_party/wasmparser
@@ -572,7 +574,6 @@ src_prepare() {
 		third_party/unrar
 		third_party/utf
 		third_party/vulkan
-		third_party/wasm_tts_engine
 		third_party/wayland
 		third_party/webdriver
 		third_party/webgpu-cts
@@ -1074,16 +1075,17 @@ chromium_compile() {
 	local -x PYTHONPATH=
 
 	# Build mksnapshot and pax-mark it.
-	local x
-	for x in mksnapshot v8_context_snapshot_generator; do
-		if tc-is-cross-compiler; then
-			eninja -C out/Release "host/${x}"
-			pax-mark m "out/Release/host/${x}"
-		else
-			eninja -C out/Release "${x}"
-			pax-mark m "out/Release/${x}"
-		fi
-	done
+	# flag pax-kernel unimplemented
+	# local x
+	# for x in mksnapshot v8_context_snapshot_generator; do
+	# 	if tc-is-cross-compiler; then
+	# 		eninja -C out/Release "host/${x}"
+	# 		pax-mark m "out/Release/host/${x}"
+	# 	else
+	# 		eninja -C out/Release "${x}"
+	# 		pax-mark m "out/Release/${x}"
+	# 	fi
+	# done
 
 	# Even though ninja autodetects number of CPUs, we respect
 	# user's options, for debugging with -j 1 or any other reason.
diff --git a/www-client/chromium/files/chromium-140-compiler-r1.patch b/www-client/chromium/files/chromium-140-compiler-r1.patch
new file mode 100644
index 0000000..04bb6eb
--- /dev/null
+++ b/www-client/chromium/files/chromium-140-compiler-r1.patch
@@ -0,0 +1,457 @@
+diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn
+index c015cf2..bc128b9 100644
+--- a/build/config/compiler/BUILD.gn
++++ b/build/config/compiler/BUILD.gn
+@@ -265,16 +265,6 @@ declare_args() {
+ assert(!(llvm_force_head_revision && use_remoteexec && host_os != "linux"),
+        "rbe with locally built clang only works on linux")
+ 
+-# Whether or not we should pass the warning_suppression.txt file to clang
+-# compilations. This file allows us to suppress warnings that originate from
+-# specific file paths, typically third_party headers.
+-#
+-# Since this is referenced both when passing the file and when deciding which
+-# warnings to enable, store it in a separate variable here.
+-use_clang_warning_suppression_file =
+-    default_toolchain != "//build/toolchain/cros:target" &&
+-    !llvm_android_mainline && is_clang && clang_warning_suppression_file != ""
+-
+ # default_include_dirs ---------------------------------------------------------
+ #
+ # This is a separate config so that third_party code (which would not use the
+@@ -342,12 +332,8 @@ config("compiler") {
+ 
+   configs += [
+     # See the definitions below.
+-    ":clang_revision",
+-    ":rustc_revision",
+-    ":compiler_cpu_abi",
+     ":compiler_codegen",
+     ":compiler_deterministic",
+-    ":clang_warning_suppression",
+   ]
+ 
+   # TODO(https://crbug.com/404297941): Disable clang_warning_suppression
+@@ -548,6 +534,9 @@ config("compiler") {
+     ldflags += [ "-fPIC" ]
+     rustflags += [ "-Crelocation-model=pic" ]
+ 
++    extra_rustflags = getenv("RUSTFLAGS")
++    rustflags += [ extra_rustflags ]
++
+     if (!is_clang) {
+       # Use pipes for communicating between sub-processes. Faster.
+       # (This flag doesn't do anything with Clang.)
+@@ -639,66 +628,6 @@ config("compiler") {
+     ldflags += [ "-Wl,-z,keep-text-section-prefix" ]
+   }
+ 
+-  if (is_clang) {
+-    cflags += [ "-fcrash-diagnostics-dir=" + clang_diagnostic_dir ]
+-    if (save_reproducers_on_lld_crash && use_lld) {
+-      ldflags += [
+-        "-fcrash-diagnostics=all",
+-        "-fcrash-diagnostics-dir=" + clang_diagnostic_dir,
+-      ]
+-    }
+-
+-    # TODO(hans): Remove this once Clang generates better optimized debug info
+-    # by default. https://crbug.com/765793
+-    cflags += [
+-      "-mllvm",
+-      "-instcombine-lower-dbg-declare=0",
+-    ]
+-    if (!is_debug && use_thin_lto && is_a_target_toolchain) {
+-      if (is_win) {
+-        ldflags += [ "-mllvm:-instcombine-lower-dbg-declare=0" ]
+-      } else {
+-        ldflags += [ "-Wl,-mllvm,-instcombine-lower-dbg-declare=0" ]
+-      }
+-    }
+-
+-    # TODO(crbug.com/40283598): This causes binary size growth and potentially
+-    # other problems.
+-    # TODO(crbug.com/40284925): This isn't supported by Cronet's mainline llvm version.
+-    if (default_toolchain != "//build/toolchain/cros:target" &&
+-        !llvm_android_mainline) {
+-      cflags += [
+-        "-mllvm",
+-        "-split-threshold-for-reg-with-hint=0",
+-      ]
+-      if (use_thin_lto && is_a_target_toolchain) {
+-        if (is_win) {
+-          ldflags += [ "-mllvm:-split-threshold-for-reg-with-hint=0" ]
+-        } else {
+-          ldflags += [ "-Wl,-mllvm,-split-threshold-for-reg-with-hint=0" ]
+-        }
+-      }
+-    }
+-
+-    # TODO(crbug.com/40192287): Investigate why/if this should be needed.
+-    if (is_win) {
+-      cflags += [ "/clang:-ffp-contract=off" ]
+-    } else {
+-      cflags += [ "-ffp-contract=off" ]
+-    }
+-
+-    # Enable ELF CREL (see crbug.com/357878242) for all platforms that use ELF
+-    # (excluding toolchains that use an older version of LLVM).
+-    # TODO(crbug.com/376278218): This causes segfault on Linux ARM builds.
+-    # It also causes segfault on Linux s390x:
+-    # https://github.com/llvm/llvm-project/issues/149511
+-    if (is_linux && use_lld && !llvm_android_mainline && current_cpu != "arm" &&
+-        current_cpu != "s390x" &&
+-        default_toolchain != "//build/toolchain/cros:target") {
+-      cflags += [ "-Wa,--crel,--allow-experimental-crel" ]
+-    }
+-  }
+-
+   # C11/C++11 compiler flags setup.
+   # ---------------------------
+   if (is_linux || is_chromeos || is_android || current_os == "aix") {
+@@ -1111,20 +1040,6 @@ config("compiler") {
+     # `-nodefaultlibs` from the linker invocation from Rust, which would be used
+     # to compile dylibs on Android, such as for constructing unit test APKs.
+     "-Cdefault-linker-libraries",
+-
+-    # To make Rust .d files compatible with ninja
+-    "-Zdep-info-omit-d-target",
+-
+-    # If a macro panics during compilation, show which macro and where it is
+-    # defined.
+-    "-Zmacro-backtrace",
+-
+-    # For deterministic builds, keep the local machine's current working
+-    # directory from appearing in build outputs.
+-    "-Zremap-cwd-prefix=.",
+-
+-    # We use clang-rt sanitizer runtimes.
+-    "-Zexternal-clangrt",
+   ]
+ 
+   if (!is_win || force_rustc_color_output) {
+@@ -1179,7 +1094,7 @@ config("compiler") {
+ # Don't allow unstable features to be enabled by `#![feature()]` without
+ # additional command line flags.
+ config("disallow_unstable_features") {
+-  rustflags = [ "-Zallow-features=" ]
++  #rustflags = [ "-Zallow-features=" ]
+ }
+ 
+ config("libcxx_hardening") {
+@@ -1649,43 +1564,6 @@ config("compiler_deterministic") {
+     }
+   }
+ 
+-  # Makes builds independent of absolute file path.
+-  if (is_clang && strip_absolute_paths_from_debug_symbols) {
+-    # If debug option is given, clang includes $cwd in debug info by default.
+-    # For such build, this flag generates reproducible obj files even we use
+-    # different build directory like "out/feature_a" and "out/feature_b" if
+-    # we build same files with same compile flag.
+-    # Other paths are already given in relative, no need to normalize them.
+-
+-    # -ffile-compilation-dir is an alias for both -fdebug-compilation-dir=
+-    # and -fcoverage-compilation-dir=.
+-    cflags += [ "-ffile-compilation-dir=." ]
+-
+-    # Convert absolute paths to relative paths. Expands to, for example:
+-    #   -file-prefix-map /path/to/chromium/src=../..
+-    swiftflags += [
+-      "-file-prefix-map",
+-      rebase_path("//.", "") + "=" + rebase_path("//.", root_build_dir),
+-    ]
+-    if (!is_win) {
+-      # We don't use clang -cc1as on Windows (yet? https://crbug.com/762167)
+-      asmflags = [ "-Wa,-fdebug-compilation-dir,." ]
+-    }
+-
+-    if (is_win && use_lld) {
+-      if (symbol_level == 2 || (is_clang && using_sanitizer)) {
+-        # Absolutize source file paths for PDB. Pass the real build directory
+-        # if the pdb contains source-level debug information and if linker
+-        # reproducibility is not critical.
+-        ldflags += [ "/PDBSourcePath:" + rebase_path(root_build_dir) ]
+-      } else {
+-        # Use a fake fixed base directory for paths in the pdb to make the pdb
+-        # output fully deterministic and independent of the build directory.
+-        ldflags += [ "/PDBSourcePath:o:\fake\prefix" ]
+-      }
+-    }
+-  }
+-
+   # Tells the compiler not to use absolute paths when passing the default
+   # paths to the tools it invokes. We don't want this because we don't
+   # really need it and it can mess up the RBE cache entries.
+@@ -1712,107 +1590,6 @@ config("compiler_deterministic") {
+   }
+ }
+ 
+-config("clang_revision") {
+-  if (is_clang && clang_base_path == default_clang_base_path &&
+-      current_os != "zos") {
+-    _perform_consistency_checks = current_toolchain == default_toolchain
+-    if (llvm_force_head_revision) {
+-      _head_revision_stamp_path = "//third_party/llvm-build/force_head_revision"
+-      _head_revision = ""
+-      if (path_exists(_head_revision_stamp_path)) {
+-        _head_revision = read_file(_head_revision_stamp_path, "trim string")
+-      }
+-      assert(
+-          _head_revision != "",
+-          "llvm_force_head_revision=true, but no locally built version was detected.")
+-      _clang_revision = _head_revision
+-    } else {
+-      _clang_revision = read_file(
+-              "//third_party/llvm-build/Release+Asserts/cr_build_revision",
+-              "trim string")
+-
+-      # Ensure that the synced clang version matches what's in git.
+-      if (_perform_consistency_checks) {
+-        # Parse the clang version from the Python script.
+-        _clang_version_lines = filter_include(
+-                read_file("//tools/clang/scripts/update.py", "list lines"),
+-                [ "CLANG_*REVISION = *" ])
+-        _py_revision =
+-            string_replace(_clang_version_lines[0], "CLANG_REVISION = '", "")
+-        _py_revision = string_replace(_py_revision, "'", "")
+-        _py_subrevision =
+-            string_replace(_clang_version_lines[1], "CLANG_SUB_REVISION = ", "")
+-        _expected_clang_revision = "$_py_revision-$_py_subrevision"
+-
+-        # TODO(agrieve): Change filter_include to _clang_revision ==
+-        # _expected_clang_revision once angle & webrtc use a GCS DEPS entry
+-        # rather than a update.py runhook.
+-        assert(
+-            filter_include([ _clang_revision ],
+-                           [
+-                             _expected_clang_revision,
+-                             "$_expected_clang_revision,*",
+-                           ]) != [],
+-            "clang_revision=\"$_clang_revision\" but update.py expected \"$_expected_clang_revision\". Did you forget to gclient sync?")
+-      }
+-    }
+-
+-    if (_perform_consistency_checks) {
+-      # Ensure that the revision matches the version major expected by GN.
+-      _versions_match = filter_include([ _clang_revision ],
+-                                       [ "llvmorg-$clang_version-*" ]) != []
+-      assert(
+-          _versions_match,
+-          "clang_revision=\"$_clang_revision\" but clang_version=\"$clang_version\". clang_version in build/toolchain/toolchain.gni is likely outdated.")
+-    }
+-
+-    if (toolchain_has_rust && _perform_consistency_checks) {
+-      # Ensure that the synced rust version matches what's in git.
+-      _rust_revision_lines =
+-          filter_include(read_file("//tools/rust/update_rust.py", "list lines"),
+-                         [ "RUST_*REVISION = *" ])
+-      _py_revision =
+-          string_replace(_rust_revision_lines[0], "RUST_REVISION = '", "")
+-      _py_revision = string_replace(_py_revision, "'", "")
+-      _py_subrevision =
+-          string_replace(_rust_revision_lines[1], "RUST_SUB_REVISION = ", "")
+-      _expected_rust_revision = "$_py_revision-$_py_subrevision"
+-
+-      # Ensure the rust version matches the clang version.
+-      assert(
+-          filter_include([ rustc_revision ],
+-                         [ "*-$_expected_rust_revision-*" ]) != [],
+-          "rustc_revision=\"$rustc_revision\" but update_rust.py expected \"$_expected_rust_revision\". Run \"gclient sync\"?")
+-    }
+-
+-    # This is here so that all files get recompiled after a clang roll and
+-    # when turning clang on or off. (defines are passed via the command line,
+-    # and build system rebuild things when their commandline changes). Nothing
+-    # should ever read this define.
+-    defines = [ "CR_CLANG_REVISION=\"$_clang_revision\"" ]
+-  }
+-}
+-
+-# Controls the usage of a warning suppression mapping (WSM) file to suppress
+-# warnings based on the path of the file they come from. It's controlled by the
+-# `clang_warning_suppression_file` gn argument , which points to a text file
+-# defining which warnings should be suppressed where.
+-# See //build/config/warning_suppression.txt for an example file; this is the
+-# file used by Chromium.
+-#
+-# To use a different file, or to use this functionality outside of chromium,
+-# set the `clang_warning_suppression_file` argument to point to the new file,
+-# e.g. by setting in the the project's .gn file.
+-config("clang_warning_suppression") {
+-  # Some build configs use older versions of clang that don't support WSMs
+-  if (use_clang_warning_suppression_file) {
+-    from_build_root =
+-        rebase_path(clang_warning_suppression_file, root_build_dir)
+-    inputs = [ clang_warning_suppression_file ]
+-    cflags = [ "--warning-suppression-mappings=" + from_build_root ]
+-  }
+-}
+-
+ # Enable bounds checks when indexing directly (i.e. not via a pointer)
+ # into C arrays. This aligns with libc++ hardening for
+ # `std::array::operator[]`.
+@@ -1836,18 +1613,6 @@ config("sanitize_c_array_bounds") {
+   }
+ }
+ 
+-config("rustc_revision") {
+-  if (rustc_revision != "") {
+-    # Similar to the above config, this is here so that all files get recompiled
+-    # after a rustc roll. Nothing should ever read this cfg. This will not be
+-    # set if a custom toolchain is used.
+-    rustflags = [
+-      "--cfg",
+-      "cr_rustc_revision=\"$rustc_revision\"",
+-    ]
+-  }
+-}
+-
+ config("compiler_arm_fpu") {
+   if (current_cpu == "arm" && !is_ios) {
+     cflags = [ "-mfpu=$arm_fpu" ]
+@@ -2290,11 +2055,7 @@ config("chromium_code") {
+       defines = [ "_HAS_NODISCARD" ]
+     }
+   } else {
+-    cflags = [ "-Wall" ]
+-    if (is_clang) {
+-      # Enable extra warnings for chromium_code when we control the compiler.
+-      cflags += [ "-Wextra" ]
+-    }
++    cflags = [ ]
+ 
+     # In Chromium code, we define __STDC_foo_MACROS in order to get the
+     # C99 macros on Mac and Linux.
+@@ -2303,24 +2064,6 @@ config("chromium_code") {
+       "__STDC_FORMAT_MACROS",
+     ]
+ 
+-    if (!is_debug && !using_sanitizer && current_cpu != "s390x" &&
+-        current_cpu != "s390" && current_cpu != "ppc64" &&
+-        current_cpu != "mips" && current_cpu != "mips64" &&
+-        current_cpu != "riscv64" && current_cpu != "loong64") {
+-      # Non-chromium code is not guaranteed to compile cleanly with
+-      # _FORTIFY_SOURCE. Also, fortified build may fail when optimizations are
+-      # disabled, so only do that for Release build.
+-      fortify_level = "2"
+-
+-      # ChromeOS's toolchain supports a high-quality _FORTIFY_SOURCE=3
+-      # implementation with a few custom glibc patches. Use that if it's
+-      # available.
+-      if (is_chromeos_device && !lacros_use_chromium_toolchain) {
+-        fortify_level = "3"
+-      }
+-      defines += [ "_FORTIFY_SOURCE=" + fortify_level ]
+-    }
+-
+     if (is_apple) {
+       cflags_objc = [ "-Wimplicit-retain-self" ]
+       cflags_objcc = [ "-Wimplicit-retain-self" ]
+@@ -2736,7 +2479,8 @@ config("default_stack_frames") {
+ # [0]: https://pinpoint-dot-chromeperf.appspot.com/job/147634a8be0000
+ # [1]: https://pinpoint-dot-chromeperf.appspot.com/job/132bc772be0000
+ # [2]: https://crrev.com/c/5447532
+-config("optimize") {
++config("optimize") { }
++config("xoptimize") {
+   if (is_win) {
+     # clang-cl's /O2 corresponds to clang's -O3, and really want -O2 for
+     # consistency with the other platforms.
+@@ -2785,7 +2529,8 @@ config("optimize") {
+ }
+ 
+ # Turn off optimizations.
+-config("no_optimize") {
++config("no_optimize") { }
++config("xno_optimize") {
+   if (is_win) {
+     cflags = [
+       "/Od",  # Disable optimization.
+@@ -2820,7 +2565,8 @@ config("no_optimize") {
+ # Turns up the optimization level. Used to explicitly enable -O2 instead of
+ # -Os for select targets on platforms that use optimize_for_size. No-op
+ # elsewhere.
+-config("optimize_max") {
++config("optimize_max") { }
++config("xoptimize_max") {
+   ldflags = common_optimize_on_ldflags
+   if (is_win) {
+     # Favor speed over size, /O2 must be before the common flags.
+@@ -2841,7 +2587,8 @@ config("optimize_max") {
+ #
+ # TODO(crbug.com/41259697) - rework how all of these configs are related
+ # so that we don't need this disclaimer.
+-config("optimize_speed") {
++config("optimize_speed") { }
++config("xoptimize_speed") {
+   ldflags = common_optimize_on_ldflags
+   if (is_win) {
+     # Favor speed over size, /O2 must be before the common flags.
+@@ -2858,7 +2605,8 @@ config("optimize_speed") {
+   rustflags = [ "-Copt-level=3" ]
+ }
+ 
+-config("optimize_fuzzing") {
++config("optimize_fuzzing") { }
++config("xoptimize_fuzzing") {
+   cflags = [ "-O1" ] + common_optimize_on_cflags
+   rustflags = [ "-Copt-level=1" ]
+   ldflags = common_optimize_on_ldflags
+@@ -2985,7 +2733,8 @@ config("win_pdbaltpath") {
+ }
+ 
+ # Full symbols.
+-config("symbols") {
++config("symbols") { }
++config("xsymbols") {
+   rustflags = []
+   configs = []
+   if (is_win) {
+@@ -3141,7 +2890,8 @@ config("symbols") {
+ # Minimal symbols.
+ # This config guarantees to hold symbol for stack trace which are shown to user
+ # when crash happens in unittests running on buildbot.
+-config("minimal_symbols") {
++config("minimal_symbols") { }
++config("xminimal_symbols") {
+   rustflags = []
+   if (is_win) {
+     # Functions, files, and line tables only.
+@@ -3217,7 +2967,8 @@ config("minimal_symbols") {
+ # This configuration contains function names only. That is, the compiler is
+ # told to not generate debug information and the linker then just puts function
+ # names in the final debug information.
+-config("no_symbols") {
++config("no_symbols") { }
++config("xno_symbols") {
+   if (is_win) {
+     ldflags = [ "/DEBUG" ]
+ 
+diff --git a/build/config/gcc/BUILD.gn b/build/config/gcc/BUILD.gn
+index a659210..bde0e1b 100644
+--- a/build/config/gcc/BUILD.gn
++++ b/build/config/gcc/BUILD.gn
+@@ -32,7 +32,7 @@ declare_args() {
+ # See http://gcc.gnu.org/wiki/Visibility
+ config("symbol_visibility_hidden") {
+   cflags = [ "-fvisibility=hidden" ]
+-  rustflags = [ "-Zdefault-visibility=hidden" ]
++  # rustflags = [ "-Zdefault-visibility=hidden" ]
+ 
+   # Visibility attribute is not supported on AIX.
+   if (current_os != "aix") {
+diff --git a/build/config/rust.gni b/build/config/rust.gni
+index 7b09b0d..e4abdce 100644
+--- a/build/config/rust.gni
++++ b/build/config/rust.gni
+@@ -73,7 +73,8 @@ declare_args() {
+   #
+   # TODO(crbug.com/40281834): Re-enable ThinLTO for Rust on LaCrOS
+   # TODO(b/300937673): Re-enable ThinLTO for Rust on ash-chrome
+-  toolchain_supports_rust_thin_lto = !is_chromeos
++  # toolchain_supports_rust_thin_lto = !is_chromeos
++  toolchain_supports_rust_thin_lto = false
+ 
+   # Any extra std rlibs in your Rust toolchain, relative to the standard
+   # Rust toolchain. Typically used with 'rust_sysroot_absolute'