Link to builder :
https://uberchromegw.corp.google.com/i/official.desktop.continuous/builders/win64%20trunk/builds/46623

Link to Error log :
https://logs.chromium.org/logs/chrome/bb/official.desktop.continuous/win64_trunk/46623/+/recipes/steps/compile/0/stdout

Error :
FAILED: obj/chrome/browser/browser/signin_util.obj 
../../third_party/llvm-build/Release+Asserts/bin/clang-cl.exe /nologo /showIncludes  -imsvc..\..\third_party\depot_tools\win_toolchain\vs_files\3bc0ec615cf20ee342f3bc29bc991b5ad66d8d2c\win_sdk\Include\10.0.17134.0\um -imsvc..\..\third_party\depot_tools\win_toolchain\vs_files\3bc0ec615cf20ee342f3bc29bc991b5ad66d8d2c\win_sdk\Include\10.0.17134.0\shared -imsvc..\..\third_party\depot_tools\win_toolchain\vs_files\3bc0ec615cf20ee342f3bc29bc991b5ad66d8d2c\win_sdk\Include\10.0.17134.0\winrt -imsvc..\..\third_party\depot_tools\win_toolchain\vs_files\3bc0ec615cf20ee342f3bc29bc991b5ad66d8d2c\win_sdk\Include\10.0.17134.0\ucrt -imsvc..\..\third_party\depot_tools\win_toolchain\vs_files\3bc0ec615cf20ee342f3bc29bc991b5ad66d8d2c\VC\Tools\MSVC\14.14.26428\include -imsvc..\..\third_party\depot_tools\win_toolchain\vs_files\3bc0ec615cf20ee342f3bc29bc991b5ad66d8d2c\VC\Tools\MSVC\14.14.26428\atlmfc\include -DZLIB_CONST -DV8_DEPRECATION_WARNINGS -DUSE_AURA=1 -DNO_TCMALLOC -DFULL_SAFE_BROWSING -DSAFE_BROWSING_CSD -DSAFE_BROWSING_DB_LOCAL -DOFFICIAL_BUILD -DGOOGLE_CHROME_BUILD "-DCR_CLANG_REVISION=\"346388-5\"" -D_HAS_NODISCARD -D_HAS_EXCEPTIONS=0 -D__STD_C -D_CRT_RAND_S -D_CRT_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_DEPRECATE -D_ATL_NO_OPENGL -D_WINDOWS -DCERT_CHAIN_PARA_HAS_EXTRA_FIELDS -DPSAPI_VERSION=1 -DWIN32 -D_SECURE_ATL -D_USING_V110_SDK71_ -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -DWIN32_LEAN_AND_MEAN -DNOMINMAX -D_UNICODE -DUNICODE -DNTDDI_VERSION=0x0A000002 -D_WIN32_WINNT=0x0A00 -DWINVER=0x0A00 -DNDEBUG -DNVALGRIND -DDYNAMIC_ANNOTATIONS_ENABLED=0 -DWEBP_EXTERN=extern -DUSE_EGL -DTOOLKIT_VIEWS=1 -DSYNC_PASSWORD_REUSE_DETECTION_ENABLED -DEXPAT_RELATIVE_PATH -DU_USING_ICU_NAMESPACE=0 -DU_ENABLE_DYLOAD=0 -DUSE_CHROMIUM_ICU=1 -DU_STATIC_IMPLEMENTATION -DICU_UTIL_DATA_IMPL=ICU_UTIL_DATA_FILE -DUCHAR_TYPE=wchar_t -DGOOGLE_PROTOBUF_NO_RTTI -DGOOGLE_PROTOBUF_NO_STATIC_INITIALIZER -DV8_USE_EXTERNAL_STARTUP_DATA -DWEBRTC_NON_STATIC_TRACE_EVENT_HANDLERS=0 -DWEBRTC_CHROMIUM_BUILD 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-I../../third_party/boringssl/src/include -I../../third_party/webrtc_overrides -I../../third_party/webrtc -I../../third_party/abseil-cpp -I../../skia/config -I../../skia/ext -I../../third_party/skia/include/c -I../../third_party/skia/include/config -I../../third_party/skia/include/core -I../../third_party/skia/include/docs -I../../third_party/skia/include/effects -I../../third_party/skia/include/encode -I../../third_party/skia/include/gpu -I../../third_party/skia/include/pathops -I../../third_party/skia/include/ports -I../../third_party/skia/include/utils -I../../third_party/skia/include/codec -I../../third_party/skia/src/gpu -I../../third_party/skia/src/sksl -I../../third_party/skia/modules/skottie/include -I../../third_party/leveldatabase -I../../third_party/leveldatabase/src -I../../third_party/leveldatabase/src/include -I../../third_party/libwebm/source -I../../v8/include -Igen/v8/include -Igen/third_party/metrics_proto -I../../third_party/re2/src -I../../third_party/mesa_headers -Igen -Igen -Igen -Igen -I../../third_party/libaddressinput/src/cpp/include -I../../third_party/perfetto/include -Igen/third_party/perfetto/protos -I../../testing/gtest/include -Igen/third_party/perfetto/protos -Igen/third_party/perfetto/protos -Igen -Igen -Igen -Igen -I../../third_party/cacheinvalidation/overrides -I../../third_party/cacheinvalidation/src -I../../third_party/flatbuffers/src/include -I../../third_party/libxml/src/include -I../../third_party/libxml/win32/include -I../../third_party/zlib -I../../third_party/crashpad/crashpad -I../../third_party/crashpad/crashpad/compat/win /utf-8 /X -fcolor-diagnostics -fmerge-all-constants -Xclang -mllvm -Xclang -instcombine-lower-dbg-declare=0 -no-canonical-prefixes -fcomplete-member-pointers /Gy /FS /bigobj /d2FastFail /Zc:sizedDealloc- -fmsc-version=1911 -m64 /Brepro /W4 -Wimplicit-fallthrough -Wthread-safety /WX /wd4091 /wd4127 /wd4251 /wd4275 /wd4312 /wd4324 /wd4351 /wd4355 /wd4503 /wd4589 /wd4611 /wd4100 /wd4121 /wd4244 /wd4505 /wd4510 /wd4512 /wd4610 /wd4838 /wd4995 /wd4996 /wd4456 /wd4457 /wd4458 /wd4459 /wd4200 /wd4201 /wd4204 /wd4221 /wd4245 /wd4267 /wd4305 /wd4389 /wd4702 /wd4701 /wd4703 /wd4661 /wd4706 /wd4715 -Wno-missing-field-initializers -Wno-unused-parameter -Wno-c++11-narrowing -Wno-unneeded-internal-declaration -Wno-undefined-var-template -Wno-null-pointer-arithmetic -Wno-nonportable-include-path -Wno-ignored-pragma-optimize /O1 /Ob2 /Oy- /Zc:inline /Gw /Oi /Z7 -fno-standalone-debug /MT -Xclang -add-plugin -Xclang find-bad-constructs -Xclang -plugin-arg-find-bad-constructs -Xclang enforce-in-thirdparty-webkit -Xclang -plugin-arg-find-bad-constructs -Xclang check-enum-max-value -Wheader-hygiene -Wstring-conversion -Wtautological-overlap-compare -Wexit-time-destructors -Wno-inconsistent-missing-override -Wno-shorten-64-to-32 -Wno-exit-time-destructors -DLIBXML_STATIC= /TP /wd4577 /GR- /c ../../chrome/browser/signin/signin_util.cc /Foobj/chrome/browser/browser/signin_util.obj /Fd"obj/chrome/browser/browser_cc.pdb"
../../chrome/browser/signin/signin_util.cc(217,23):  error: 'IsAllowedUsername' is a private member of 'SigninManager'
      signin_manager->IsAllowedUsername(primary_account.email)) {
                      ^
../..\components/signin/core/browser/signin_manager.h(255,8):  note: declared private here
  bool IsAllowedUsername(const std::string& username) const;


Suspecting Cl : https://chromium.googlesource.com/chromium/src/+/198eca95746e419a01cc619e8f063b84a2cbdedc