Use a weakreference to prevent the static variable from holding an Activity.
Use a weakreference to prevent the static variable from holding an Activity.

Bug: 5057764

Change-Id: If734e3ef4928b21a5e31e0ad50c97da287c3c116

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