[cc] Rename all cc/ filenames to Chromium style

cc/time_source.h

-// Copyright 2012 The Chromium Authors. All rights reserved.
+// Copyright 2011 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 CCTimeSource_h
+#define CCTimeSource_h
+
+#include "base/time.h"
+#include <wtf/RefCounted.h>
+
+namespace cc {
+
+class CCThread;
+
+class CCTimeSourceClient {
+public:
+    virtual void onTimerTick() = 0;
+
+protected:
+    virtual ~CCTimeSourceClient() { }
+};
+
+// An generic interface for getting a reliably-ticking timesource of
+// a specified rate.
+//
+// Be sure to call setActive(false) before releasing your reference to the
+// timer, or it will keep on ticking!
+class CCTimeSource : public RefCounted<CCTimeSource> {
+public:
+    virtual ~CCTimeSource() { }
+    virtual void setClient(CCTimeSourceClient*) = 0;
+    virtual void setActive(bool) = 0;
+    virtual bool active() const = 0;
+    virtual void setTimebaseAndInterval(base::TimeTicks timebase, base::TimeDelta interval) = 0;
+    virtual base::TimeTicks lastTickTime() = 0;
+    virtual base::TimeTicks nextTickTime() = 0;
+};
+
+}
+#endif // CCSmoothedTimer_h