Revert 161133 - [cc] Use base ptr types for cc's CSS animation classes

webkit/compositor_bindings/WebAnimationCurveCommon.cpp

Index: webkit/compositor_bindings/WebAnimationCurveCommon.cpp
===================================================================
--- webkit/compositor_bindings/WebAnimationCurveCommon.cpp	(revision 161134)
+++ webkit/compositor_bindings/WebAnimationCurveCommon.cpp	(working copy)
@@ -8,9 +8,12 @@
 
 #include "CCTimingFunction.h"
 
+#include <wtf/OwnPtr.h>
+#include <wtf/PassOwnPtr.h>
+
 namespace WebKit {
 
-scoped_ptr<cc::CCTimingFunction> createTimingFunction(WebAnimationCurve::TimingFunctionType type)
+PassOwnPtr<cc::CCTimingFunction> createTimingFunction(WebAnimationCurve::TimingFunctionType type)
 {
     switch (type) {
     case WebAnimationCurve::TimingFunctionTypeEase:
@@ -22,9 +25,9 @@
     case WebAnimationCurve::TimingFunctionTypeEaseInOut:
         return cc::CCEaseInOutTimingFunction::create();
     case WebAnimationCurve::TimingFunctionTypeLinear:
-        return scoped_ptr<cc::CCTimingFunction>();
+        return nullptr;
     }
-    return scoped_ptr<cc::CCTimingFunction>();
+    return nullptr;
 }
 
 } // namespace WebKit