compositor-worker: cc->blink mutation plumbing

third_party/WebKit/Source/core/animation/CompositorMutationAnimations.h

+// Copyright 2016 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 CompositorMutationAnimations_h
+#define CompositorMutationAnimations_h
+
+#include "core/animation/Animation.h"
+#include "platform/heap/Handle.h"
+#include "wtf/Noncopyable.h"
+
+namespace blink {
+
+class Element;
+class CompositorMutation;
+
+class CompositorMutationAnimations final {
+    DISALLOW_NEW();
+    WTF_MAKE_NONCOPYABLE(CompositorMutationAnimations);
+

[esprehn, 2016/02/17 01:32:36]

remove nl

[majidvp, 2016/02/22 17:59:48]

Done.

+public:
+    CompositorMutationAnimations() {}
+    void applyUpdate(Element&, const CompositorMutation&);
+
+    DEFINE_INLINE_TRACE()
+    {
+        visitor->trace(m_opacityAnimation);
+        visitor->trace(m_transformAnimation);
+    }
+
+private:
+    // We only need two animations at the moment but if that grows we should
+    // use a map instead of individual members.

[esprehn, 2016/02/17 01:32:36]

Why not use a single animation?

[majidvp, 2016/02/22 17:59:48]

Done.

+    Member<Animation> m_opacityAnimation;
+    Member<Animation> m_transformAnimation;
+};
+
+} // namespace blink
+
+#endif