cc: Remove deprecated DisplayItemList::Raster overload.

cc/paint/display_item_list.h

Index: cc/paint/display_item_list.h
diff --git a/cc/paint/display_item_list.h b/cc/paint/display_item_list.h
index 92c332fe8eddbafeaf76d5aa8d1c2169c063d093..d838a53253c022101edfb3e6fcf0a0c7b0fbe123 100644
--- a/cc/paint/display_item_list.h
+++ b/cc/paint/display_item_list.h
@@ -42,13 +42,8 @@ class CC_PAINT_EXPORT DisplayItemList
  public:
   DisplayItemList();
 
-  // TODO(trchen): Deprecated. Apply clip and scale on the canvas instead.
   void Raster(SkCanvas* canvas,
-              SkPicture::AbortCallback* callback,
-              const gfx::Rect& canvas_target_playback_rect,
-              float contents_scale) const;
-
-  void Raster(SkCanvas* canvas, SkPicture::AbortCallback* callback) const;
+              SkPicture::AbortCallback* callback = nullptr) const;
 
   // Because processing happens in these CreateAndAppend functions, all the set
   // up for the item should be done via the args, which is why the return type