DevTools: Initial implementation of slow CPU emulation.

content/renderer/devtools/devtools_cpu_throttler.h

+// Copyright 2015 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 CONTENT_RENDERER_DEVTOOLS_DEVTOOLS_CPU_THROTTLER_H_
+#define CONTENT_RENDERER_DEVTOOLS_DEVTOOLS_CPU_THROTTLER_H_
+
+#include "base/memory/scoped_ptr.h"
+#include "content/common/content_export.h"
+
+namespace content {
+
+class CPUThrottlingThread;
+
+class CONTENT_EXPORT DevToolsCPUThrottler final {
+ public:
+  DevToolsCPUThrottler();
+  ~DevToolsCPUThrottler();
+
+  void SetThrottlingRate(double rate);
+
+ private:
+  scoped_ptr<CPUThrottlingThread> throttling_thread_;
+
+  DISALLOW_COPY_AND_ASSIGN(DevToolsCPUThrottler);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_DEVTOOLS_DEVTOOLS_CPU_THROTTLER_H_