Revert 160631 - [cc] Store CCLayerImpls as scoped_ptrs

cc/CCSolidColorLayerImpl.h

 // Copyright 2012 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 CCSolidColorLayerImpl_h
 #define CCSolidColorLayerImpl_h
 
 #include "CCLayerImpl.h"
 #include <public/WebTransformationMatrix.h>
 
 namespace cc {
 
 class CCSolidColorLayerImpl : public CCLayerImpl {
 public:
-    static scoped_ptr<CCSolidColorLayerImpl> create(int id)
+    static PassOwnPtr<CCSolidColorLayerImpl> create(int id)
     {
-        return make_scoped_ptr(new CCSolidColorLayerImpl(id));
+        return adoptPtr(new CCSolidColorLayerImpl(id));
     }
     virtual ~CCSolidColorLayerImpl();
 
     virtual void appendQuads(CCQuadSink&, CCAppendQuadsData&) OVERRIDE;
 
 protected:
     explicit CCSolidColorLayerImpl(int id);
 
 private:
     virtual const char* layerTypeAsString() const OVERRIDE;
 
     const int m_tileSize;
 };
 
 }
 
 #endif // CCSolidColorLayerImpl_h