Implement DeferredAnimatableValue

Source/core/animation/AnimatableDeferredSnapshot.h

Index: Source/core/animation/AnimatableDeferredSnapshot.h
diff --git a/Source/core/animation/AnimatableNeutral.h b/Source/core/animation/AnimatableDeferredSnapshot.h
similarity index 73%
copy from Source/core/animation/AnimatableNeutral.h
copy to Source/core/animation/AnimatableDeferredSnapshot.h
index e044ee825e7514a99776bcc03ea68c207ae9eb47..da7caabe3e2eb8c19b46482d85118e0a02b0ff25 100644
--- a/Source/core/animation/AnimatableNeutral.h
+++ b/Source/core/animation/AnimatableDeferredSnapshot.h
@@ -28,16 +28,17 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef AnimatableNeutral_h
-#define AnimatableNeutral_h
+#ifndef AnimatableDeferredSnapshot_h
+#define AnimatableDeferredSnapshot_h
 
 #include "core/animation/AnimatableValue.h"
 
 namespace WebCore {
 
-class AnimatableNeutral : public AnimatableValue {
+// Used as a sentinal value to indicate where a snapshot of an element's CSS value should go in a KeyframeAnimationEffect::KeyframeVector.
+class AnimatableDeferredSnapshot : public AnimatableValue {
 public:
-    virtual ~AnimatableNeutral() { }
+    virtual ~AnimatableDeferredSnapshot() { }
 
     virtual PassRefPtr<CSSValue> toCSSValue() const OVERRIDE
     {
@@ -45,25 +46,30 @@ public:
         return 0;
     }
 
-    virtual bool isNeutral() const OVERRIDE { return true; }
+    virtual bool isDeferredSnapshot() const OVERRIDE { return true; }
 
 protected:
-    static PassRefPtr<AnimatableNeutral> create() { return adoptRef(new AnimatableNeutral()); }
+    static PassRefPtr<AnimatableDeferredSnapshot> create() { return adoptRef(new AnimatableDeferredSnapshot()); }
 
-    virtual PassRefPtr<AnimatableValue> interpolateTo(const AnimatableValue* value, double fraction) const OVERRIDE
+    virtual PassRefPtr<AnimatableValue> interpolateTo(const AnimatableValue*, double fraction) const OVERRIDE
     {
         ASSERT_NOT_REACHED();
         return 0;
     }
 
-    virtual PassRefPtr<AnimatableValue> addWith(const AnimatableValue* value) const OVERRIDE { return defaultAddWith(this, value); }
+    virtual PassRefPtr<AnimatableValue> addWith(const AnimatableValue*) const OVERRIDE
+    {
+        ASSERT_NOT_REACHED();
+        return 0;
+    }
 
 private:
-    AnimatableNeutral() : AnimatableValue(TypeNeutral) { }
+    AnimatableDeferredSnapshot() : AnimatableValue(TypeDeferredSnapshot) { }
 
     friend class AnimatableValue;
 };
 
+
 } // namespace WebCore
 
-#endif // AnimatableNeutral_h
+#endif // AnimatableDeferredSnapshot_h