compositor-worker: cc->blink mutation plumbing

third_party/WebKit/Source/platform/graphics/CompositorMutationsTarget.h

Index: third_party/WebKit/Source/platform/graphics/CompositorMutationsTarget.h
diff --git a/third_party/WebKit/Source/platform/graphics/CompositorMutationsTarget.h b/third_party/WebKit/Source/platform/graphics/CompositorMutationsTarget.h
new file mode 100644
index 0000000000000000000000000000000000000000..79e7967726b55508fabc4ee877c3b16b9371e3f2
--- /dev/null
+++ b/third_party/WebKit/Source/platform/graphics/CompositorMutationsTarget.h
@@ -0,0 +1,23 @@
+// 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 CompositorMutationsTarget_h
+#define CompositorMutationsTarget_h
+
+#include "platform/PlatformExport.h"
+#include "platform/graphics/CompositorMutation.h"
+
+namespace blink {
+
+class PLATFORM_EXPORT CompositorMutationsTarget {
+public:
+    virtual void applyMutations(const CompositorMutations&) = 0;
+
+protected:
+    virtual ~CompositorMutationsTarget() {}
+};
+
+} // namespace blink
+
+#endif // CompositorMutationsTarget_h