Handle direction control in compositor Animations

Source/core/animation/CompositorAnimationsImpl.h

Index: Source/core/animation/CompositorAnimationsImpl.h
diff --git a/Source/core/animation/CompositorAnimationsImpl.h b/Source/core/animation/CompositorAnimationsImpl.h
index 9bf8889e195c8334c67231ed4d50606ebffa0868..e7e972c2e0a71b28afca3dba53a009c7dd157a15 100644
--- a/Source/core/animation/CompositorAnimationsImpl.h
+++ b/Source/core/animation/CompositorAnimationsImpl.h
@@ -41,8 +41,13 @@ typedef KeyframeEffectModel::PropertySpecificKeyframeVector KeyframeVector;
 class CompositorAnimationsImpl {
 private:
     struct CompositorTiming {
-        bool reverse;
-        bool alternate;
+        enum Direction {
+            Normal = 0,
+            Reverse,
+            Alternate,
+            AlternateReverse
+        };
+        Direction direction;

[dstockwell, 2014/03/05 02:07:19]

Can't we reuse Timing::PlaybackDirection?

         double scaledDuration;
         double scaledTimeOffset;
         int adjustedIterationCount;