Run chrome with
- GPU raster disabled
- a non-sRGB color profile
- CoreAnimation compositing

Open an image, and drag the window size, as in the attached movie.

Notice that color spaces flicker.

This is because we're getting two different color spaces at GpuMemoryBuffer allocation time:
ScopedWriteLockGpuMemoryBuffer::GetGpuMemoryBuffer gets:
  {primaries:[[0.564011,0.240677,0.159515,],
              [0.283691,0.650345,0.0659485,],
              [0.0181885,0.0565643,0.750443,],],
   transfer:[1,0,0,0,0,0,2.2,],
   matrix:1, range:2, icc_profile_id:10}

ScopedWriteLockGL::AllocateGpuMemoryBuffer gets:
  {primaries:1, transfer:13, matrix:1, range:2, icc_profile_id:0}

But ... the cc::Resources have the same color space. So we get flickering in CoreAnimation rendering only.

This appears to have worked in Chrome 61 and regressed sometime recently.