add new readPixels with direct memory parameters

src/utils/SkGatherPixelRefsAndRects.h

Index: src/utils/SkGatherPixelRefsAndRects.h
diff --git a/src/utils/SkGatherPixelRefsAndRects.h b/src/utils/SkGatherPixelRefsAndRects.h
index a6ff16daf370fb1f09b53fd0bd6aaffa32c0ec5f..94f0a5dcd0f7de391140fc37bede87e8160bea78 100644
--- a/src/utils/SkGatherPixelRefsAndRects.h
+++ b/src/utils/SkGatherPixelRefsAndRects.h
@@ -297,12 +297,6 @@ protected:
     virtual const SkBitmap& onAccessBitmap() SK_OVERRIDE {
         return fEmptyBitmap;
     }
-    virtual bool onReadPixels(const SkBitmap& bitmap,
-                              int x, int y,
-                              SkCanvas::Config8888 config8888) SK_OVERRIDE {
-        NotSupported();
-        return false;
-    }
     virtual void lockPixels() SK_OVERRIDE { NothingToDo(); }
     virtual void unlockPixels() SK_OVERRIDE { NothingToDo(); }
     virtual bool allowImageFilter(const SkImageFilter*) SK_OVERRIDE { return false; }