Rename WebAnimation to WebCompositorAnimation

public/platform/WebCompositorAnimation.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WebCompositorAnimation_h
 #define WebCompositorAnimation_h
 
-#include "WebAnimation.h"
+namespace blink {
+
+// A compositor driven animation.
+class WebCompositorAnimation {
+public:
+    enum TargetProperty {
+        TargetPropertyTransform = 0,
+        TargetPropertyOpacity,
+        TargetPropertyFilter,
+        TargetPropertyScrollOffset
+    };
+
+    virtual ~WebCompositorAnimation() { }
+
+    // An id is effectively the animation's name, and it is not unique.
+    virtual int id() = 0;
+
+    virtual TargetProperty targetProperty() const = 0;
+
+    // This is the number of times that the animation will play. If this
+    // value is zero the animation will not play. If it is negative, then
+    // the animation will loop indefinitely.
+    virtual int iterations() const = 0;
+    virtual void setIterations(int) = 0;
+
+    virtual double startTime() const = 0;
+    virtual void setStartTime(double monotonicTime) = 0;
+
+    virtual double timeOffset() const = 0;
+    virtual void setTimeOffset(double monotonicTime) = 0;
+
+    // If alternatesDirection is true, on odd numbered iterations we reverse the curve.
+    virtual bool alternatesDirection() const = 0;
+    virtual void setAlternatesDirection(bool) = 0;
+};
+
+} // namespace blink
 
 #endif // WebCompositorAnimation_h