on Win7 Tests (1): https://build.chromium.org/p/chromium.win/builders/Win7%20Tests%20%281%29/builds/57351

Could it be this?

  [3852:5804:0915/022401:ERROR:angle_platform_impl.cc(33)] ANGLE Display::initialize error 4: Could not create D3D11 device.
  [3852:5804:0915/022401:ERROR:gl_surface_egl.cc(621)] eglInitialize D3D11 failed with error EGL_NOT_INITIALIZED, trying next display type
  [5152:6000:0915/022402:ERROR:angle_platform_impl.cc(33)] ANGLE Display::initialize error 4: Renderer does not support PS 3.0.aborting!
  [5152:6000:0915/022402:ERROR:gl_surface_egl.cc(621)] eglInitialize D3D9 failed with error EGL_NOT_INITIALIZED
  [5152:6000:0915/022402:ERROR:gl_initializer_win.cc(271)] GLSurfaceEGL::InitializeOneOff failed.
  [5152:6000:0915/022402:VERBOSE1:gpu_init.cc(180)] gl::init::InitializeGLOneOff failed
  [5152:6000:0915/022402:VERBOSE1:child_thread_impl.cc(412)] Mojo is enabled on child
  [5152:6000:0915/022402:ERROR:gpu_child_thread.cc(331)] Exiting GPU process due to errors during initialization