Fix broken handling of the BACK key in PopupWindow. Needed by Launcher2.
Fix broken handling of the BACK key in PopupWindow. Needed by Launcher2.

Change-Id: Icccbd8897186d0b9348a40b3dfc19ab7ac389efd

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