The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/09f4d43e57110ca3d2d6ed631b0f24e1b3da4881

commit 09f4d43e57110ca3d2d6ed631b0f24e1b3da4881
Author: panicker <panicker@chromium.org>
Date: Fri Nov 11 02:49:56 2016

Update First Paint to include paint of non-default document background color

BUG= 663949 
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Review-Url: https://codereview.chromium.org/2481363007
Cr-Commit-Position: refs/heads/master@{#431473}

[modify] https://crrev.com/09f4d43e57110ca3d2d6ed631b0f24e1b3da4881/third_party/WebKit/Source/core/paint/ViewPainter.cpp
[modify] https://crrev.com/09f4d43e57110ca3d2d6ed631b0f24e1b3da4881/third_party/WebKit/Source/platform/graphics/GraphicsLayer.cpp
[modify] https://crrev.com/09f4d43e57110ca3d2d6ed631b0f24e1b3da4881/third_party/WebKit/Source/platform/graphics/paint/PaintController.h