Fix bug 4083825 - Gesture zoom locked along content edges under some circumstances
Fix bug 4083825 - Gesture zoom locked along content edges under some
circumstances

Tune the procedure used to handle "zoom slop" during a webview
pan+zoom gesture.

Change-Id: Ia706722ba6a46e64cce8814d4668e3857b16e562

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base