Delete scrollCompensationAdjustment.

cc/trees/property_tree.h

 // Copyright 2014 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_PROPERTY_TREE_H_
 #define CC_TREES_PROPERTY_TREE_H_
 
 #include <stddef.h>
 
 #include <unordered_map>
@@ skipping 154 matching lines @@
 
   // The maximum scale that this node's |to_target| transform will have during
   // current animations, considering only the starting scale of each animation.
   float combined_starting_animation_scale;
 
   gfx::Vector2dF sublayer_scale;
 
   // TODO(vollick): will be moved when accelerated effects are implemented.
   gfx::ScrollOffset scroll_offset;
 
-  // We scroll snap where possible, but this has an effect on scroll
-  // compensation: the snap is yet more scrolling that must be compensated for.
-  // This value stores the snapped amount for this purpose.
+  // We scroll snap where possible, but this means fixed-pos elements must be
+  // adjusted.  This value stores the snapped amount for this purpose.
   gfx::Vector2dF scroll_snap;
 
   // TODO(vollick): will be moved when accelerated effects are implemented.
   gfx::Vector2dF source_offset;
   gfx::Vector2dF source_to_parent;
 
   bool operator==(const TransformNodeData& other) const;
 
   void set_to_parent(const gfx::Transform& transform) {
     to_parent = transform;
@@ skipping 464 matching lines @@
 
  private:
   gfx::Vector2dF inner_viewport_container_bounds_delta_;
   gfx::Vector2dF outer_viewport_container_bounds_delta_;
   gfx::Vector2dF inner_viewport_scroll_bounds_delta_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_PROPERTY_TREE_H_