CC Animations: Establish AnimationHost, AnimationTimeline and AnimationPlayer

cc/blink/web_compositor_animation_timeline_impl.h

+// Copyright 2015 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 CC_BLINK_WEB_COMPOSITOR_ANIMATION_TIMELINE_IMPL_H_
+#define CC_BLINK_WEB_COMPOSITOR_ANIMATION_TIMELINE_IMPL_H_
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "cc/blink/cc_blink_export.h"
+#include "third_party/WebKit/public/platform/WebCompositorAnimationTimeline.h"
+
+namespace blink {
+class WebCompositorAnimationPlayerClient;
+}
+
+namespace cc {
+class AnimationTimeline;
+}
+
+namespace cc_blink {
+
+class WebCompositorAnimationTimelineImpl
+    : public blink::WebCompositorAnimationTimeline {
+ public:
+  CC_BLINK_EXPORT explicit WebCompositorAnimationTimelineImpl();
+  virtual ~WebCompositorAnimationTimelineImpl();
+
+  CC_BLINK_EXPORT cc::AnimationTimeline* animation_timeline() const;
+
+  // blink::WebCompositorAnimationTimeline implementation
+  virtual void playerAttached(
+      const blink::WebCompositorAnimationPlayerClient& client);
+  virtual void playerDestroyed(
+      const blink::WebCompositorAnimationPlayerClient& client);
+
+ private:
+  scoped_refptr<cc::AnimationTimeline> animation_timeline_;
+
+  DISALLOW_COPY_AND_ASSIGN(WebCompositorAnimationTimelineImpl);
+};
+
+}  // namespace cc_blink
+
+#endif  // CC_BLINK_WEB_COMPOSITOR_ANIMATION_TIMELINE_IMPL_H_