Merge 194269

Merge 194269
> cc: Add strict layer property change checking and handle bounds changes during paint.
> 
> This fixes a problem where paint would cause layer bounds to change
> and Layer::PushProperties to push an non-empty picture layer without
> a recording to the impl side.
> 
> This also adds a new command line switch that make layer property
> changes during paint cause a CHECK() to fail. This can be used
> to diagnose situations where paint is incorrectly causing layer
> properties to change.
> 
> BUG=229179
> TEST=cc_unittests --gtest_filter=LayerTreeHostTestChangeLayerPropertiesInPaintContents.RunSingleThread
> 
> Review URL: https://codereview.chromium.org/13939005

TBR=reveman@chromium.org
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=194305