Revert "Delete CC."

cc/output/compositor_frame_ack.h

Index: cc/output/compositor_frame_ack.h
diff --git a/cc/output/compositor_frame_ack.h b/cc/output/compositor_frame_ack.h
new file mode 100644
index 0000000000000000000000000000000000000000..4fedc278a03a9a2fb89652628add229d60618234
--- /dev/null
+++ b/cc/output/compositor_frame_ack.h
@@ -0,0 +1,29 @@
+// Copyright 2012 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 CC_OUTPUT_COMPOSITOR_FRAME_ACK_H_
+#define CC_OUTPUT_COMPOSITOR_FRAME_ACK_H_
+
+#include "base/memory/scoped_ptr.h"
+#include "cc/output/gl_frame_data.h"
+#include "cc/resources/returned_resource.h"
+
+namespace cc {
+
+class CompositorFrameAck {
+ public:
+  CompositorFrameAck();
+  ~CompositorFrameAck();
+
+  ReturnedResourceArray resources;
+  scoped_ptr<GLFrameData> gl_frame_data;
+  unsigned last_software_frame_id;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(CompositorFrameAck);
+};
+
+}  // namespace cc
+
+#endif  // CC_OUTPUT_COMPOSITOR_FRAME_ACK_H_