WIP - compositor worker mega patch.

third_party/WebKit/public/platform/WebMutator.h

Index: third_party/WebKit/public/platform/WebMutator.h
diff --git a/third_party/WebKit/public/platform/WebMutator.h b/third_party/WebKit/public/platform/WebMutator.h
new file mode 100644
index 0000000000000000000000000000000000000000..3d37094777dbd3481604b3cad4bb04f78100b73d
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+++ b/third_party/WebKit/public/platform/WebMutator.h
@@ -0,0 +1,25 @@
+// 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 WebMutator_h
+#define WebMutator_h
+
+#include "public/platform/WebCommon.h"
+#include "public/platform/WebMutation.h"
+
+namespace blink {
+
+class WebCompositorMutableStateProvider;
+class WebThread;
+
+class BLINK_EXPORT WebMutator {
+public:
+    virtual ~WebMutator() {}
+
+    virtual bool mutate(double timeNow, WebCompositorMutableStateProvider*) = 0;
+};
+
+} // namespace blink
+
+#endif // WebMutatorClient_h