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skyostil@chromium.org authored
If the top controls manager calculates an animation scroll delta of zero, we schedule another animation attempt for the following frame. This causes the compositor to run constantly -- for instance -- on pages where scrolling JavaScript-driven instead of impl-driven. The fix is to bail out if there is no active top controls animation. TEST=LayerTreeHostImplWithTopControlsTest.NoIdleAnimation BUG=309648 Review URL: https://codereview.chromium.org/167013003 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251770 0039d316-1c4b-4281-b951-d872f2087c98
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