GPU blit speedup: avoid texture filtering and texture domain when not necessary

BUG=crbug.com/102284
REVIEW=http://codereview.appspot.com/5836047/
TEST=code path already covered by gm/nocolorbleed gm/bitmapfilters and others



git-svn-id: http://skia.googlecode.com/svn/trunk@3421 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed