Merge 116316 - [chromium] setContentsMemoryAllocationLimitBytes needs to setNeedsCommit.

Merge 116316 - [chromium] setContentsMemoryAllocationLimitBytes needs to setNeedsCommit.
https://bugs.webkit.org/show_bug.cgi?id=85801

Patch by Michal Mocny <mmocny@google.com>; on 2012-05-07
Reviewed by Adrienne Walker.

CCLayerTreeHost::setContentsMemoryAllocationLimitBytes needs to call setNeedsCommit after adjusting memory
limits, so that we push a new frame.  In particular, when returning from non visibile state, we adjust
memory allocation from 0 to non 0, and we need to push a non blank frame.

* platform/graphics/chromium/cc/CCLayerTreeHost.cpp:
(WebCore::CCLayerTreeHost::setVisible):
(WebCore::CCLayerTreeHost::setContentsMemoryAllocationLimitBytes):

TBR=commit-queue@webkit.org
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=116667