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

cc/blink/web_content_layer_impl.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_BLINK_WEB_CONTENT_LAYER_IMPL_H_
 #define CC_BLINK_WEB_CONTENT_LAYER_IMPL_H_
 
 #include <stddef.h>
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "cc/blink/cc_blink_export.h"
 #include "cc/blink/web_layer_impl.h"
 #include "cc/layers/content_layer_client.h"
 #include "third_party/WebKit/public/platform/WebContentLayer.h"
 
 namespace cc {
 class IntRect;
 class FloatRect;
 }
 
@@ skipping 14 matching lines @@
  protected:
   ~WebContentLayerImpl() override;
 
   // ContentLayerClient implementation.
   gfx::Rect PaintableRegion() override;
   scoped_refptr<cc::DisplayItemList> PaintContentsToDisplayList(
       PaintingControlSetting painting_control) override;
   bool FillsBoundsCompletely() const override;
   size_t GetApproximateUnsharedMemoryUsage() const override;
 
-  scoped_ptr<WebLayerImpl> layer_;
+  std::unique_ptr<WebLayerImpl> layer_;
   blink::WebContentLayerClient* client_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(WebContentLayerImpl);
 };
 
 }  // namespace cc_blink
 
 #endif  // CC_BLINK_WEB_CONTENT_LAYER_IMPL_H_