Failing on the following 6 bots

CrWinGoma(dll)
CrWin7Goma(dll)
CrWin7Goma(dbg)
CrWin7Goma(clbr)
Chromium Mac 10.9 Goma Canary (dbg)
Chromium Mac 10.9 Goma Canary (dbg)(clobber)

Log from CrWinGoma(dll)

Retrying 1 test (retry #1)
[ RUN      ] StoragePartitionShaderClearTest.ClearShaderCache
Backtrace:
	std::_Tree<std::_Tmap_traits<base::FilePath,gpu::ShaderDiskCache *,std::less<base::FilePath>,std::allocator<std::pair<base::FilePath const ,gpu::ShaderDiskCache *> >,0> >::_Lbound<base::FilePath> [0x6E49E2B2+5]
	std::_Tree<std::_Tmap_traits<base::FilePath,gpu::ShaderDiskCache *,std::less<base::FilePath>,std::allocator<std::pair<base::FilePath const ,gpu::ShaderDiskCache *> >,0> >::find [0x6E4A17FA+15]
	gpu::ShaderCacheFactory::GetByPath [0x6E49F70F+29]
	gpu::ShaderCacheFactory::ClearByPath [0x6E49F2DB+48]
	content::StoragePartitionImpl::DataDeletionHelper::ClearQuotaManagedDataOnIOThread [0x6E3B0493+195]
	base::internal::FunctorTraits<void (__cdecl*)(base::FilePath const &,base::Time,base::Time,base::Callback<void __cdecl(void),1,1> const &),void>::Invoke<base::FilePath const &,base::Time const &,base::Time const &,base::Callback<void __cdecl(void),1,1> co [0x6E3ADE89+28]
	base::internal::Invoker<base::internal::BindState<void (__cdecl*)(base::FilePath const &,base::Time,base::Time,base::Callback<void __cdecl(void),1,1> const &),base::FilePath,base::Time,base::Time,base::Callback<void __cdecl(void),1,1> >,void __cdecl(void) [0x6E3AE174+29]
	base::internal::Invoker<base::internal::BindState<void (__cdecl*)(base::FilePath const &,base::Time,base::Time,base::Callback<void __cdecl(void),1,1> const &),base::FilePath,base::Time,base::Time,base::Callback<void __cdecl(void),1,1> >,void __cdecl(void) [0x6E3B18A8+22]
	base::debug::TaskAnnotator::RunTask [0x6F50212E+286]
	base::MessageLoop::RunTask [0x6F532FFF+1231]
	base::MessageLoop::DoWork [0x6F531ACB+603]
	base::MessagePumpForIO::DoRunLoop [0x6F53567A+186]
	base::MessagePumpWin::Run [0x6F53605A+74]
	base::MessageLoop::RunHandler [0x6F532B0E+94]
	base::RunLoop::Run [0x6F56A6A5+101]
	content::StoragePartitionShaderClearTest_ClearShaderCache_Test::TestBody [0x015311E4+302]
	testing::internal::HandleExceptionsInMethodIfSupported<testing::Test,void> [0x01A81E58+32]
	testing::Test::Run [0x01A8D55E+93]
	testing::TestInfo::Run [0x01A8D737+126]
	testing::TestCase::Run [0x01A8D62B+133]
	testing::internal::UnitTestImpl::RunAllTests [0x01A8DA43+433]
	testing::internal::HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl,bool> [0x01A81ED6+32]
	testing::UnitTest::Run [0x01A8D841+136]
	base::TestSuite::Run [0x01A0129A+97]
	base::internal::RunMixin<base::Callback<int __cdecl(void),1,1> >::Run [0x019FF67C+24]
	base::LaunchUnitTests [0x019FECB2+777]
	base::LaunchUnitTests [0x019FE97B+79]
	main [0x016E551F+200]
	__scrt_common_main_seh [0x01CC581B+249] (f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:253)
	BaseThreadInitThunk [0x74E47C04+36]
	RtlInitializeExceptionChain [0x7731AB8F+143]
	RtlInitializeExceptionChain [0x7731AB5A+90]
[4723/4723] StoragePartitionShaderClearTest.ClearShaderCache (CRASHED)