[cc] Use base ptr types for cc's CSS animation classes

webkit/compositor_bindings/WebAnimationCurveCommon.cpp

 // 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.
 
 #include "config.h"
 
 #include "WebAnimationCurveCommon.h"
 
 #include "CCTimingFunction.h"
 
-#include <wtf/OwnPtr.h>
-#include <wtf/PassOwnPtr.h>
-
 namespace WebKit {
 
-PassOwnPtr<cc::CCTimingFunction> createTimingFunction(WebAnimationCurve::TimingFunctionType type)
+scoped_ptr<cc::CCTimingFunction> createTimingFunction(WebAnimationCurve::TimingFunctionType type)
 {
     switch (type) {
     case WebAnimationCurve::TimingFunctionTypeEase:
         return cc::CCEaseTimingFunction::create();
     case WebAnimationCurve::TimingFunctionTypeEaseIn:
         return cc::CCEaseInTimingFunction::create();
     case WebAnimationCurve::TimingFunctionTypeEaseOut:
         return cc::CCEaseOutTimingFunction::create();
     case WebAnimationCurve::TimingFunctionTypeEaseInOut:
         return cc::CCEaseInOutTimingFunction::create();
     case WebAnimationCurve::TimingFunctionTypeLinear:
-        return nullptr;
+        return scoped_ptr<cc::CCTimingFunction>();
     }
-    return nullptr;
+    return scoped_ptr<cc::CCTimingFunction>();
 }
 
 } // namespace WebKit