cc: Remove texture scaling and clear edge texels of a layer.

cc/picture_pile.h

Index: cc/picture_pile.h
diff --git a/cc/picture_pile.h b/cc/picture_pile.h
index a6271fac05f27ddceadf3548140add02fee6fc9e..475f74b54c81c6702f62fb56ecb062a1d3cc7360 100644
--- a/cc/picture_pile.h
+++ b/cc/picture_pile.h
@@ -21,6 +21,7 @@ class CC_EXPORT PicturePile : public PicturePileBase {
   // Invalidations are in layer space.
   void Update(
       ContentLayerClient* painter,
+      SkColor background_color,
       const Region& invalidation,
       gfx::Rect visible_layer_rect,
       RenderingStats* stats);