Fix remaining cc files to compile with Clang

cc/CCAnimationCurve.cpp

Index: cc/CCAnimationCurve.cpp
diff --git a/cc/CCAnimationCurve.cpp b/cc/CCAnimationCurve.cpp
index ae5ccdf2b0ae9c597b3ed22ece845ce30de229ba..7cd01587d4b29a7b57c93a3ebdf287f936936008 100644
--- a/cc/CCAnimationCurve.cpp
+++ b/cc/CCAnimationCurve.cpp
@@ -14,10 +14,20 @@ const CCFloatAnimationCurve* CCAnimationCurve::toFloatAnimationCurve() const
     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