Revert "Delete CC."

cc/output/overlay_strategy_single_on_top.h

Index: cc/output/overlay_strategy_single_on_top.h
diff --git a/cc/output/overlay_strategy_single_on_top.h b/cc/output/overlay_strategy_single_on_top.h
new file mode 100644
index 0000000000000000000000000000000000000000..2b261af6bc96881466b6a9e2aa01bc378a57afe3
--- /dev/null
+++ b/cc/output/overlay_strategy_single_on_top.h
@@ -0,0 +1,47 @@
+// Copyright 2014 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_OVERLAY_STRATEGY_SINGLE_ON_TOP_H_
+#define CC_OUTPUT_OVERLAY_STRATEGY_SINGLE_ON_TOP_H_
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "cc/output/overlay_candidate.h"
+#include "cc/output/overlay_processor.h"
+#include "cc/quads/render_pass.h"
+
+namespace cc {
+class OverlayCandidateValidator;
+class StreamVideoDrawQuad;
+class TextureDrawQuad;
+
+class OverlayStrategySingleOnTop : public OverlayProcessor::Strategy {
+ public:
+  OverlayStrategySingleOnTop(OverlayCandidateValidator* capability_checker,
+                             ResourceProvider* resource_provider);
+  bool Attempt(RenderPassList* render_passes_in_draw_order,
+               OverlayCandidateList* candidate_list) override;
+
+ private:
+  bool IsOverlayQuad(const DrawQuad* draw_quad);
+  bool GetCandidateQuadInfo(const DrawQuad& draw_quad,
+                            OverlayCandidate* quad_info);
+
+  // Returns true if |draw_quad| will not block quads underneath from becoming
+  // an overlay.
+  bool IsInvisibleQuad(const DrawQuad* draw_quad);
+
+  bool GetTextureQuadInfo(const TextureDrawQuad& quad,
+                          OverlayCandidate* quad_info);
+  bool GetVideoQuadInfo(const StreamVideoDrawQuad& quad,
+                        OverlayCandidate* quad_info);
+
+  OverlayCandidateValidator* capability_checker_;
+  ResourceProvider* resource_provider_;
+  DISALLOW_COPY_AND_ASSIGN(OverlayStrategySingleOnTop);
+};
+
+}  // namespace cc
+
+#endif  // CC_OUTPUT_OVERLAY_STRATEGY_SINGLE_ON_TOP_H_