Fix bug 2587373 - awaken scrollbars when a scrolling view becomes visible.
Fix bug 2587373 - awaken scrollbars when a scrolling view becomes visible.

Change-Id: I7eb38c53c3a03b23786b8b0c2d16139acd0eb38e

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