The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/c9ed083cb0aefcbf4dde912343bb7c80f9e0fedc

commit c9ed083cb0aefcbf4dde912343bb7c80f9e0fedc
Author: ericrk <ericrk@chromium.org>
Date: Wed Jul 20 19:42:50 2016

Re-enable GPU partial raster for non-MSAA content

This re-enables GPU partial raster for non-MSAA content. MSAA resolve
does not work well with partial raster right now - we may try to address
this in the future.

BUG= 629683 
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_blink_rel

Review-Url: https://codereview.chromium.org/2161933004
Cr-Commit-Position: refs/heads/master@{#406642}

[modify] https://crrev.com/c9ed083cb0aefcbf4dde912343bb7c80f9e0fedc/cc/raster/gpu_raster_buffer_provider.cc
[modify] https://crrev.com/c9ed083cb0aefcbf4dde912343bb7c80f9e0fedc/cc/trees/layer_tree_host_pixeltest_tiles.cc

Partial raster for GPU caused problems when used with MSAA. We've disabled this path for MSAA for now. Closing out this bug.

 Issue 629979  has been merged into this issue.