Fix ref count of fillGradient and strokeGradient
Fix ref count of fillGradient and strokeGradient

Bug: 28086621
Change-Id: Ibb52bdfb20904f0ad102878fbb33d3679bb5132d

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