Add a factory Create function for SkColorFilterImageFilter, and move the matrix optimization there.  This will allow the Chrome compositor to extract the optimized matrix, and potentially apply the color matrix itself, saving a buffer allocation & draw.

Review URL: https://codereview.appspot.com/6739057

git-svn-id: http://skia.googlecode.com/svn/trunk@6152 2bbb7eff-a529-9590-31e7-b0007b416f81
6 files changed