Convert //cc from scoped_ptr to std::unique_ptr.

cc/playback/display_item_list.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/playback/display_item_list.h"
 
 #include <stddef.h>
 
 #include <string>
 
@@ skipping 219 matching lines @@
   // TODO(jbroman): Does anything else owned by this class substantially
   // contribute to memory usage?
 
   return memory_usage;
 }
 
 bool DisplayItemList::ShouldBeAnalyzedForSolidColor() const {
   return ApproximateOpCount() <= kOpCountThatIsOkToAnalyze;
 }
 
-scoped_ptr<base::trace_event::ConvertableToTraceFormat>
+std::unique_ptr<base::trace_event::ConvertableToTraceFormat>
 DisplayItemList::AsValue(bool include_items) const {
-  scoped_ptr<base::trace_event::TracedValue> state(
+  std::unique_ptr<base::trace_event::TracedValue> state(
       new base::trace_event::TracedValue());
 
   state->BeginDictionary("params");
   if (include_items) {
     state->BeginArray("items");
     size_t item_index = 0;
     for (const DisplayItem& item : items_) {
       item.AsValueInto(item_index < visual_rects_.size()
                            ? visual_rects_[item_index]
                            : gfx::Rect(),
@@ skipping 53 matching lines @@
     float raster_scale,
     std::vector<DrawImage>* images) {
   image_map_.GetDiscardableImagesInRect(rect, raster_scale, images);
 }
 
 bool DisplayItemList::MayHaveDiscardableImages() const {
   return !image_map_.empty();
 }
 
 }  // namespace cc