Communicate MT changes to impl-only scroll offset animations

third_party/WebKit/Source/platform/animation/CompositorAnimationHost.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 CompositorAnimationHost_h
+#define CompositorAnimationHost_h
+
+#include "base/memory/ref_counted.h"
+#include "platform/PlatformExport.h"
+#include "ui/gfx/geometry/vector2d.h"
+#include "wtf/Noncopyable.h"
+
+#include <memory>
+
+namespace cc {
+class AnimationHost;
+struct ScrollOffsetAnimationUpdate;
+}
+
+namespace blink {
+
+// A compositor representation for cc::AnimationHost.
+// This class wraps cc::AnimationHost and is currently only created from
+// CompositorAnimationTimeline::compositorAnimationHost.
+// TODO(ymalik): Correctly introduce CompositorAnimationHost to blink. See
+// crbug.com/610763.

[loyso (OOO), 2016/05/11 06:25:45]

Probably same bug link needed on
CompositorAnimationTimeline::compositorAnimationHost method.

[ymalik, 2016/05/12 22:31:25]

Done.

+class PLATFORM_EXPORT CompositorAnimationHost {
+public:
+    CompositorAnimationHost(cc::AnimationHost*);

[loyso (OOO), 2016/05/11 06:25:45]

explicit

[ymalik, 2016/05/12 22:31:25]

Done.

+
+    cc::AnimationHost* animationHost() const;
+
+    void updateImplOnlyScrollOffsetAnimation(const gfx::Vector2dF& adjustment, int elementId);

[loyso (OOO), 2016/05/11 06:25:45]

cc::ElementId

[ymalik, 2016/05/12 22:31:25]

Done.

+
+private:
+    cc::AnimationHost* m_animationHost;
+};
+
+} // namespace blink
+
+#endif // CompositorAnimationTimeline_h