Prune the resource cache before adding new caches
Prune the resource cache before adding new caches

BUG: 18666986
Change-Id: I5f7e4983100c2d5e4478a4d82c21bb59fa87810e

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