start on apply gamma cleanup

include/core/SkSurface.h

Index: include/core/SkSurface.h
diff --git a/include/core/SkSurface.h b/include/core/SkSurface.h
index 4d38d300c90ce888401dfdbcbd84a57b1b236d2d..f3aeee09fa1ec4dae96f1eb5a0842547b12ec02a 100644
--- a/include/core/SkSurface.h
+++ b/include/core/SkSurface.h
@@ -339,6 +339,13 @@ public:
     void draw(SkCanvas*, SkScalar x, SkScalar y, const SkPaint*);
 
     /**
+     * Copies contents of image to this surface, while applying a gamma curve. Fails if the image
+     * and surface are not ideniticaly sized. Fails if the surface is not gpu backed. This ignores
+     * all SkCanvas state including the SkCanvas layer stack.
+     */
+    bool blitWithGamma(SkImage* image, SkScalar gamma);
+
+    /**
      *  If the surface has direct access to its pixels (i.e. they are in local
      *  RAM) return true, and if not null, set the pixmap parameter to point to the information
      *  about the surface's pixels. The pixel address in the pixmap is only valid while