[cc] Remove unused parameter to DidUpdateScrollOffset

cc/trees/layer_tree_impl.h

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_TREES_LAYER_TREE_IMPL_H_
 #define CC_TREES_LAYER_TREE_IMPL_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 401 matching lines @@
   void set_top_controls_height(float top_controls_height);
   float top_controls_height() const { return top_controls_height_; }
   void PushTopControlsFromMainThread(float top_controls_shown_ratio);
   void set_bottom_controls_height(float bottom_controls_height);
   float bottom_controls_height() const { return bottom_controls_height_; }
 
   void SetPendingPageScaleAnimation(
       std::unique_ptr<PendingPageScaleAnimation> pending_animation);
   std::unique_ptr<PendingPageScaleAnimation> TakePendingPageScaleAnimation();
 
-  void DidUpdateScrollOffset(int layer_id, int transform_id);
+  void DidUpdateScrollOffset(int layer_id);
   void DidUpdateScrollState(int layer_id);
 
   void ScrollAnimationAbort(bool needs_completion);
 
   bool have_scroll_event_handlers() const {
     return have_scroll_event_handlers_;
   }
   void set_have_scroll_event_handlers(bool have_event_handlers) {
     have_scroll_event_handlers_ = have_event_handlers;
   }
@@ skipping 119 matching lines @@
 
   std::unique_ptr<PendingPageScaleAnimation> pending_page_scale_animation_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(LayerTreeImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_IMPL_H_