cc: Renamed approximate{BytesUsed,OpCount} in paint op buffer.

cc/paint/clip_display_item.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_PAINT_CLIP_DISPLAY_ITEM_H_
 #define CC_PAINT_CLIP_DISPLAY_ITEM_H_
 
 #include <stddef.h>
 
 #include <vector>
 
 #include "cc/paint/display_item.h"
 #include "cc/paint/paint_export.h"
 #include "third_party/skia/include/core/SkRRect.h"
 #include "ui/gfx/geometry/rect.h"
 
 namespace cc {
 
 class CC_PAINT_EXPORT ClipDisplayItem : public DisplayItem {
  public:
   ClipDisplayItem(const gfx::Rect& clip_rect,
                   std::vector<SkRRect> rounded_clip_rects,
                   bool antialias);
   ~ClipDisplayItem() override;
 
   size_t ExternalMemoryUsage() const {
     return rounded_clip_rects.capacity() * sizeof(rounded_clip_rects[0]);
   }
-  int ApproximateOpCount() const { return 1; }
+  int OpCount() const { return 1; }
 
   const gfx::Rect clip_rect;
   const std::vector<SkRRect> rounded_clip_rects;
   const bool antialias;
 };
 
 class CC_PAINT_EXPORT EndClipDisplayItem : public DisplayItem {
  public:
   EndClipDisplayItem();
   ~EndClipDisplayItem() override;
 
-  int ApproximateOpCount() const { return 0; }
+  int OpCount() const { return 0; }
 };
 
 }  // namespace cc
 
 #endif  // CC_PAINT_CLIP_DISPLAY_ITEM_H_