Prevent memory leak with ComposeShader.
Prevent memory leak with ComposeShader.

Change-Id: I926186c96b3c61085cdb6173d56d3a15a04ac95b

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