Avoid crash if layer is destroyed after GLRenderer
Avoid crash if layer is destroyed after GLRenderer

bug:12988766
Change-Id: I96961aeef0b1d42ae8c609f1607a100e61a3d593

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