cc: Convert processScrollDeltas() to scoped_ptr<>.

cc/CCLayerTreeHostImpl.h

 // Copyright 2011 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 CCLayerTreeHostImpl_h
 #define CCLayerTreeHostImpl_h
 
 #include "base/basictypes.h"
 #include "base/time.h"
 #include "CCAnimationEvents.h"
@@ skipping 188 matching lines @@
 
     void setViewportSize(const IntSize& layoutViewportSize, const IntSize& deviceViewportSize);
     const IntSize& layoutViewportSize() const { return m_layoutViewportSize; }
 
     float deviceScaleFactor() const { return m_deviceScaleFactor; }
     void setDeviceScaleFactor(float);
 
     float pageScaleFactor() const;
     void setPageScaleFactorAndLimits(float pageScaleFactor, float minPageScaleFactor, float maxPageScaleFactor);
 
-    PassOwnPtr<CCScrollAndScaleSet> processScrollDeltas();
+    scoped_ptr<CCScrollAndScaleSet> processScrollDeltas();
     WebKit::WebTransformationMatrix implTransform() const;
 
     void startPageScaleAnimation(const IntSize& tragetPosition, bool useAnchor, float scale, double durationSec);
 
     SkColor backgroundColor() const { return m_backgroundColor; }
     void setBackgroundColor(SkColor color) { m_backgroundColor = color; }
 
     bool hasTransparentBackground() const { return m_hasTransparentBackground; }
     void setHasTransparentBackground(bool transparent) { m_hasTransparentBackground = transparent; }
 
@@ skipping 127 matching lines @@
 
     size_t m_numImplThreadScrolls;
     size_t m_numMainThreadScrolls;
 
     DISALLOW_COPY_AND_ASSIGN(CCLayerTreeHostImpl);
 };
 
 };
 
 #endif