WIP - compositor worker mega patch.

third_party/WebKit/public/platform/WebMutatorClient.h

Index: third_party/WebKit/public/platform/WebMutatorClient.h
diff --git a/third_party/WebKit/public/platform/WebMutatorClient.h b/third_party/WebKit/public/platform/WebMutatorClient.h
new file mode 100644
index 0000000000000000000000000000000000000000..01e850eeb96cbf501b6dfca92680d26555adc486
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+++ b/third_party/WebKit/public/platform/WebMutatorClient.h
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+// 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 WebMutatorClient_h
+#define WebMutatorClient_h
+
+#include "public/platform/WebCommon.h"
+#include "public/platform/WebMutation.h"
+
+namespace blink {
+
+// This class only exists so that blink can instantiate a LayerTreeMutator
+// to pass to the layer tree view.
+class BLINK_EXPORT WebMutatorClient {
+public:
+    virtual ~WebMutatorClient() {}
+
+    virtual void setNeedsMutate() = 0;
+};
+
+} // namespace blink
+#endif // WebMutatorClient_h