WIP - compositor worker mega patch.

third_party/WebKit/Source/platform/graphics/CompositorMutator.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 CompositorMutator_h
+#define CompositorMutator_h
+
+namespace blink {
+
+class CompositorMutableStateProvider;
+
+class CompositorMutator {
+public:
+    virtual ~CompositorMutator() {}
+
+    virtual bool mutate(double timeNow, CompositorMutableStateProvider* state) = 0;
+};
+
+} // namespace blink
+
+#endif // CompositorMutator_h