https://build.chromium.org/p/chromium.perf/buildslaves/build121-m1
https://build.chromium.org/p/chromium.perf/builders/Win%20Builder/builds/44847/steps/compile/logs/stdio

[2530/10903] LINK_MODULE(DLL) nacl_win64/osmesa.dll nacl_win64/osmesa.dll.pdb
FAILED: nacl_win64/osmesa.dll nacl_win64/osmesa.dll.pdb 
C:/b/depot_tools/python276_bin/python.exe ../../build/toolchain/win/tool_wrapper.py link-wrapper environment.x64 False link.exe /nologo /DLL /OUT:nacl_win64/osmesa.dll /PDB:nacl_win64/osmesa.dll.pdb @nacl_win64/osmesa.dll.rsp
allocator_shim.obj : error LNK2001: unresolved external symbol "unsigned __int64 __cdecl base::GetPageSize(void)" (?GetPageSize@base@@YA_KXZ)

nacl_win64/osmesa.dll : fatal error LNK1120: 1 unresolved externals


All the other builders seem to be compiling just fine:
https://build.chromium.org/p/chromium.perf/builders/Win%20Builder
Can the trooper take a look?