Revert "Delete CC."

cc/debug/rendering_stats.h

Index: cc/debug/rendering_stats.h
diff --git a/cc/debug/rendering_stats.h b/cc/debug/rendering_stats.h
new file mode 100644
index 0000000000000000000000000000000000000000..63c69a8f0a00069a608d67fabb7ed5a77563d4f9
--- /dev/null
+++ b/cc/debug/rendering_stats.h
@@ -0,0 +1,61 @@
+// 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_DEBUG_RENDERING_STATS_H_
+#define CC_DEBUG_RENDERING_STATS_H_
+
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/time/time.h"
+#include "base/trace_event/trace_event_argument.h"
+#include "base/values.h"
+#include "cc/debug/traced_value.h"
+
+namespace cc {
+
+struct RenderingStats {
+  // Stores a sequence of TimeDelta objects.
+  class TimeDeltaList {
+   public:
+    TimeDeltaList();
+    ~TimeDeltaList();
+
+    void Append(base::TimeDelta value);
+    void AddToTracedValue(const char* name,
+                          base::trace_event::TracedValue* list_value) const;
+
+    void Add(const TimeDeltaList& other);
+
+    base::TimeDelta GetLastTimeDelta() const;
+
+   private:
+    std::vector<base::TimeDelta> values;
+  };
+
+  RenderingStats();
+  ~RenderingStats();
+
+  // Note: when adding new members, please remember to update Add in
+  // rendering_stats.cc.
+
+  int64 frame_count;
+  int64 visible_content_area;
+  int64 approximated_visible_content_area;
+
+  TimeDeltaList draw_duration;
+  TimeDeltaList draw_duration_estimate;
+  TimeDeltaList begin_main_frame_to_commit_duration;
+  TimeDeltaList begin_main_frame_to_commit_duration_estimate;
+  TimeDeltaList commit_to_activate_duration;
+  TimeDeltaList commit_to_activate_duration_estimate;
+
+  scoped_refptr<base::trace_event::ConvertableToTraceFormat> AsTraceableData()
+      const;
+  void Add(const RenderingStats& other);
+};
+
+}  // namespace cc
+
+#endif  // CC_DEBUG_RENDERING_STATS_H_