Web Animations: Introduce ActiveAnimations and AnimationStack

Source/core/animation/DocumentTimeline.h

Index: Source/core/animation/DocumentTimeline.h
diff --git a/Source/core/animation/DocumentTimeline.h b/Source/core/animation/DocumentTimeline.h
index a2bd963f0bda4d5263b09db30bdaeecfc90a2a07..314082660fae3ead60f1d08624c884d5ed1e662c 100644
--- a/Source/core/animation/DocumentTimeline.h
+++ b/Source/core/animation/DocumentTimeline.h
@@ -31,6 +31,7 @@
 #ifndef DocumentTimeline_h
 #define DocumentTimeline_h
 
+#include "core/animation/AnimationStack.h"
 #include "core/animation/Player.h"
 #include "wtf/RefCounted.h"
 #include "wtf/RefPtr.h"
@@ -50,11 +51,13 @@ public:
     PassRefPtr<Player> play(TimedItem*);
     double currentTime() { return m_currentTime; }
     void pauseAnimationsForTesting(double);
+    AnimationStack& animationStack() { return m_active; }
 
 private:
     DocumentTimeline(Document*);
     double m_currentTime;
     Document* m_document;
+    AnimationStack m_active;

[esprehn, 2013/07/17 06:48:01]

m_animationStack, m_active is not very descriptive

[dstockwell, 2013/07/17 13:10:19]

Done.

     Vector<RefPtr<Player> > m_players;
 };