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

cc/paint/drawing_display_item.cc

 // 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.
 
 #include "cc/paint/drawing_display_item.h"
 
 #include "third_party/skia/include/core/SkPicture.h"
 
 namespace cc {
 
 DrawingDisplayItem::DrawingDisplayItem() : DisplayItem(DRAWING) {}
 
 DrawingDisplayItem::DrawingDisplayItem(sk_sp<const PaintRecord> record)
     : DisplayItem(DRAWING), picture(std::move(record)) {}
 
 DrawingDisplayItem::DrawingDisplayItem(const DrawingDisplayItem& item)
     : DisplayItem(DRAWING), picture(item.picture) {}
 
 DrawingDisplayItem::~DrawingDisplayItem() = default;
 
 size_t DrawingDisplayItem::ExternalMemoryUsage() const {
-  return picture->approximateBytesUsed();
+  return picture->bytes_used();
 }
 
 DISABLE_CFI_PERF
-int DrawingDisplayItem::ApproximateOpCount() const {
-  return picture->approximateOpCount();
+size_t DrawingDisplayItem::OpCount() const {
+  return picture->size();
 }
 
 }  // namespace cc