Fix remaining cc files to compile with Clang

cc/CCAnimationCurve.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 "CCAnimationCurve.h"
 
 namespace cc {
 
 const CCFloatAnimationCurve* CCAnimationCurve::toFloatAnimationCurve() const
 {
     ASSERT(type() ==  CCAnimationCurve::Float);
     return static_cast<const CCFloatAnimationCurve*>(this);
 }
 
+CCAnimationCurve::Type CCFloatAnimationCurve::type() const
+{
+    return Float;
+}
+
 const CCTransformAnimationCurve* CCAnimationCurve::toTransformAnimationCurve() const
 {
     ASSERT(type() ==  CCAnimationCurve::Transform);
     return static_cast<const CCTransformAnimationCurve*>(this);
 }
 
+CCAnimationCurve::Type CCTransformAnimationCurve::type() const
+{
+    return Transform;
+}
+
 } // namespace cc