DO NOT MERGE Fix memory leak when creating SkBitmapProcShader

cherry pick from AOSP/master

A SkShader is ref counted, but the first but unref() was
never called for the local reference in
PlatformGraphicsContextSkia::drawBitmapPattern().

Change-Id: I2d1a2e95eeaf479e332a2dbd4e1e9f1b8baac0f7
1 file changed