compositor-worker: cc->blink mutation plumbing

third_party/WebKit/Source/platform/graphics/CompositorMutatorClient.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 CompositorMutatorClient_h
+#define CompositorMutatorClient_h
+
+#include "platform/PlatformExport.h"
+#include "public/platform/WebCompositorMutatorClient.h"
+#include "wtf/OwnPtr.h"
+#include "wtf/PassOwnPtr.h"
+
+namespace blink {
+
+struct CompositorMutations;
+class CompositorMutationsTarget;
+
+class PLATFORM_EXPORT CompositorMutatorClient : public WebCompositorMutatorClient {
+public:
+    CompositorMutatorClient(CompositorMutationsTarget*);
+    virtual ~CompositorMutatorClient();
+
+    // cc::LayerTreeMutator
+    base::Closure TakeMutations() override;
+
+    void setMutationsForTesting(PassOwnPtr<CompositorMutations>);
+private:
+    CompositorMutationsTarget* m_mutationsTarget;
+    OwnPtr<CompositorMutations> m_mutations;
+};
+
+} // namespace blink
+
+#endif // CompositorMutatorClient_h