DO NOT MERGE
DO NOT MERGE

Just scale the canvas instead of changing the real
scale factor during pinch.

Added over limit zoom feedback for pinch in the WebView.

Fix http://b/issue?id=2383539
xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base