bindings: Adds virtual ScriptWrappable::wrap method.

Source/core/animation/AnimationTimeline.h

Index: Source/core/animation/AnimationTimeline.h
diff --git a/Source/core/animation/AnimationTimeline.h b/Source/core/animation/AnimationTimeline.h
index 69b76c789c3abd3e7e4f4f9f475624065cc32da0..3d91d89abdf8893ef295a83c9aa8bb75ec21c502 100644
--- a/Source/core/animation/AnimationTimeline.h
+++ b/Source/core/animation/AnimationTimeline.h
@@ -48,6 +48,7 @@ class AnimationNode;
 
 // AnimationTimeline is constructed and owned by Document, and tied to its lifecycle.
 class AnimationTimeline : public RefCountedWillBeGarbageCollectedFinalized<AnimationTimeline>, public ScriptWrappable {
+    DEFINE_WRAPPERTYPEINFO();
 public:
     class PlatformTiming : public NoBaseWillBeGarbageCollectedFinalized<PlatformTiming> {
 
@@ -138,6 +139,6 @@ private:
     friend class AnimationAnimationTimelineTest;
 };
 
-} // namespace
+} // namespace blink
 
 #endif