John Reck 83b9e1d99d Call onScrollChanged when scrolling layers
Bug: 5533389
 Treat layer scrolling as a no-op scroll by calling
 onScrollChanged with old scroll == new scroll

Change-Id: I1dc2b94b37c65bf088806b8d28be32883e3b8bee
2011-11-14 16:17:54 -08:00
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