Avoid converting drawImage/drawImageRect into drawBitmap calls

Change-Id: I1ae551afa93222126852bb9e429a565379a93f24
Reviewed-on: https://skia-review.googlesource.com/33661
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Derek Sollenberger <djsollen@google.com>
1 file changed