chrome power profiler chrome side changes

chrome/browser/devtools/devtools_power_profiler_host.h

+// 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 CHROME_BROWSER_DEVTOOLS_DEVTOOLS_POWER_PROFILER_HOST_H_
+#define CHROME_BROWSER_DEVTOOLS_DEVTOOLS_POWER_PROFILER_HOST_H_
+
+#include "base/basictypes.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/weak_ptr.h"
+#include "base/values.h"
+#include "chrome/browser/devtools/devtools_window.h"
+#include "content/public/browser/power_profiler_observer.h"
+
+class DevToolsWindow;
+
+// A class used to monitor the power usage and tell profiler the power data
+class DevToolsPowerProfilerHost : public content::PowerProfilerObserver {
+ public:
+  explicit DevToolsPowerProfilerHost(const base::WeakPtr<DevToolsWindow>&);
+  ~DevToolsPowerProfilerHost() {}
+  virtual void Send(content::PowerEvent*) OVERRIDE;
+
+ private:
+  void SendWrapper(const std::string& message);
+  base::Time convertMonotonicTimeToWallTime(base::TimeTicks&);
+  void convertPowerValueToJSONObject(base::DictionaryValue*,
+      content::PowerEvent*);
+  base::WeakPtr<DevToolsWindow> frontend_host_;
+  DISALLOW_COPY_AND_ASSIGN(DevToolsPowerProfilerHost);
+};
+
+#endif  // CHROME_BROWSER_DEVTOOLS_DEVTOOLS_POWER_PROFILER_HOST_H_