Caused by https://chromium-review.googlesource.com/334731

See https://build.chromium.org/p/chromium.gpu.fyi/builders/GPU%20Win%20Clang%20Builder%20%28dbg%29/builds/2090 :
FAILED: ninja -t msvc -e environment.x86 -- E:\b\build\goma/gomacc "..\..\third_party/llvm-build/Release+Asserts/bin/clang-cl" -m32 /nologo /showIncludes /FC @obj\third_party\angle\src\libANGLE\renderer\d3d\d3d11\libANGLE.Buffer11.obj.rsp /c ..\..\third_party\angle\src\libANGLE\renderer\d3d\d3d11\Buffer11.cpp /Foobj\third_party\angle\src\libANGLE\renderer\d3d\d3d11\libANGLE.Buffer11.obj /Fdobj\third_party\angle\src\libANGLE.cc.pdb 
In file included from ..\..\third_party\angle\src\libANGLE\renderer\d3d\d3d11\Buffer11.cpp:9:
In file included from ..\..\third_party\angle\src\libANGLE/renderer/d3d/d3d11/Buffer11.h:15:
In file included from ..\..\third_party\angle\src\libANGLE/renderer/d3d/BufferD3D.h:13:
In file included from ..\..\third_party\angle\src\libANGLE/renderer/BufferImpl.h:14:
..\..\third_party\angle\src\libANGLE/Error.h(60,40):  error: no matching function for call to 'forward'
        : mError(GL_NO_ERROR), mResult(std::forward<T>(result))
                                       ^~~~~~~~~~~~~~~
..\..\third_party\angle\src\libANGLE\renderer\d3d\d3d11\Buffer11.cpp(603,16):  note: in instantiation of function template specialization 'gl::ErrorOrResult<ID3D11Buffer *>::ErrorOrResult<gl::Error &>' requested here
        return error;
               ^
E:\b\depot_tools\win_toolchain\vs_files\a3796183a9fc4d22a687c5212b9c76dbd136d70d\win_sdk\bin\..\..\VC\include\type_traits(1231,19):  note: candidate function [with _Ty = ID3D11Buffer *] not viable: no known conversion from 'gl::Error' to 'typename remove_reference<ID3D11Buffer *>::type &' (aka 'ID3D11Buffer *&') for 1st argument
        _CONST_FUN _Ty&& forward(
                         ^
E:\b\depot_tools\win_toolchain\vs_files\a3796183a9fc4d22a687c5212b9c76dbd136d70d\win_sdk\bin\..\..\VC\include\type_traits(1238,19):  note: candidate function [with _Ty = ID3D11Buffer *] not viable: no known conversion from 'gl::Error' to 'typename remove_reference<ID3D11Buffer *>::type' (aka 'ID3D11Buffer *') for 1st argument
        _CONST_FUN _Ty&& forward(
                         ^
In file included from ..\..\third_party\angle\src\libANGLE\renderer\d3d\d3d11\Buffer11.cpp:9:
In file included from ..\..\third_party\angle\src\libANGLE/renderer/d3d/d3d11/Buffer11.h:15:
In file included from ..\..\third_party\angle\src\libANGLE/renderer/d3d/BufferD3D.h:13:
In file included from ..\..\third_party\angle\src\libANGLE/renderer/BufferImpl.h:14:
..\..\third_party\angle\src\libANGLE/Error.h(60,40):  error: no matching function for call to 'forward'
        : mError(GL_NO_ERROR), mResult(std::forward<T>(result))
                                       ^~~~~~~~~~~~~~~
..\..\third_party\angle\src\libANGLE\renderer\d3d\d3d11\Buffer11.cpp(795,20):  note: in instantiation of function template specialization 'gl::ErrorOrResult<rx::Buffer11::BufferStorage *>::ErrorOrResult<gl::Error &>' requested here
            return error;
                   ^
E:\b\depot_tools\win_toolchain\vs_files\a3796183a9fc4d22a687c5212b9c76dbd136d70d\win_sdk\bin\..\..\VC\include\type_traits(1231,19):  note: candidate function [with _Ty = rx::Buffer11::BufferStorage *] not viable: no known conversion from 'gl::Error' to 'typename remove_reference<BufferStorage *>::type &' (aka 'rx::Buffer11::BufferStorage *&') for 1st argument
        _CONST_FUN _Ty&& forward(
                         ^
E:\b\depot_tools\win_toolchain\vs_files\a3796183a9fc4d22a687c5212b9c76dbd136d70d\win_sdk\bin\..\..\VC\include\type_traits(1238,19):  note: candidate function [with _Ty = rx::Buffer11::BufferStorage *] not viable: no known conversion from 'gl::Error' to 'typename remove_reference<BufferStorage *>::type' (aka 'rx::Buffer11::BufferStorage *') for 1st argument
        _CONST_FUN _Ty&& forward(
                         ^
In file included from ..\..\third_party\angle\src\libANGLE\renderer\d3d\d3d11\Buffer11.cpp:9:
In file included from ..\..\third_party\angle\src\libANGLE/renderer/d3d/d3d11/Buffer11.h:15:
In file included from ..\..\third_party\angle\src\libANGLE/renderer/d3d/BufferD3D.h:13:
In file included from ..\..\third_party\angle\src\libANGLE/renderer/BufferImpl.h:14:
..\..\third_party\angle\src\libANGLE/Error.h(60,40):  error: no matching function for call to 'forward'
        : mError(GL_NO_ERROR), mResult(std::forward<T>(result))
                                       ^~~~~~~~~~~~~~~
..\..\third_party\angle\src\libANGLE\renderer\d3d\d3d11\Buffer11.cpp(1048,20):  note: in instantiation of function template specialization 'gl::ErrorOrResult<rx::(anonymous namespace)::CopyResult>::ErrorOrResult<gl::Error &>' requested here
            return error;
                   ^
E:\b\depot_tools\win_toolchain\vs_files\a3796183a9fc4d22a687c5212b9c76dbd136d70d\win_sdk\bin\..\..\VC\include\type_traits(1231,19):  note: candidate function [with _Ty = rx::(anonymous namespace)::CopyResult] not viable: no known conversion from 'gl::Error' to 'typename remove_reference<CopyResult>::type &' (aka 'rx::(anonymous namespace)::CopyResult &') for 1st argument
        _CONST_FUN _Ty&& forward(
                         ^
E:\b\depot_tools\win_toolchain\vs_files\a3796183a9fc4d22a687c5212b9c76dbd136d70d\win_sdk\bin\..\..\VC\include\type_traits(1238,19):  note: candidate function [with _Ty = rx::(anonymous namespace)::CopyResult] not viable: no known conversion from 'gl::Error' to 'typename remove_reference<CopyResult>::type' (aka 'rx::(anonymous namespace)::CopyResult') for 1st argument
        _CONST_FUN _Ty&& forward(
                         ^
3 errors generated.