[chromeos] Move files from chromeos/power to chrome/browser/chromeos/power

chromeos/power/power_data_collector.h

-// Copyright 2013 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 CHROMEOS_POWER_POWER_DATA_COLLECTOR_H_
-#define CHROMEOS_POWER_POWER_DATA_COLLECTOR_H_
-
-#include <deque>
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "base/time/time.h"
-#include "chromeos/chromeos_export.h"
-#include "chromeos/dbus/power_manager_client.h"
-
-namespace power_manager {
-class PowerSupplyProperties;
-}
-
-namespace chromeos {
-
-// A class which starts collecting power metrics, like the battery charge, as
-// soon as it is initialized via Initialize().
-//
-// This class is implemented as a global singleton, initialized after
-// DBusThreadManager which it depends on.
-class CHROMEOS_EXPORT PowerDataCollector : public PowerManagerClient::Observer {
- public:
-  struct PowerSupplySample {
-    PowerSupplySample();
-
-    // Time when the sample was captured. We use base::Time instead of
-    // base::TimeTicks because the latter does not advance when the system is
-    // suspended.
-    base::Time time;
-
-    // True if connected to external power at the time of the sample.
-    bool external_power;
-
-    // The battery charge as a percentage of full charge in range [0.0, 100.00].
-    double battery_percent;
-
-    // The battery discharge rate in W. Positive if the battery is being
-    // discharged and negative if it's being charged.
-    double battery_discharge_rate;
-  };
-
-  struct SystemResumedSample {
-    SystemResumedSample();
-
-    // Time when the system resumed.
-    base::Time time;
-
-    // The duration for which the system was in sleep/suspend state.
-    base::TimeDelta sleep_duration;
-  };
-
-  const std::deque<PowerSupplySample>& power_supply_data() const {
-    return power_supply_data_;
-  }
-
-  const std::deque<SystemResumedSample>& system_resumed_data() const {
-    return system_resumed_data_;
-  }
-
-  // Can be called only after DBusThreadManager is initialized.
-  static void Initialize();
-
-  // Can be called only if initialized via Initialize, and before
-  // DBusThreadManager is destroyed.
-  static void Shutdown();
-
-  // Returns the global instance of PowerDataCollector.
-  static PowerDataCollector* Get();
-
-  // PowerManagerClient::Observer implementation:
-  virtual void PowerChanged(
-      const power_manager::PowerSupplyProperties& prop) OVERRIDE;
-  virtual void SystemResumed(const base::TimeDelta& sleep_duration) OVERRIDE;
-
-  // Only those power data samples which fall within the last
-  // |kSampleTimeLimitSec| are stored in memory.
-  static const int kSampleTimeLimitSec;
-
- private:
-  PowerDataCollector();
-
-  virtual ~PowerDataCollector();
-
-  std::deque<PowerSupplySample> power_supply_data_;
-  std::deque<SystemResumedSample> system_resumed_data_;
-
-  DISALLOW_COPY_AND_ASSIGN(PowerDataCollector);
-};
-
-// Adds |sample| to |sample_deque|.
-// It dumps samples |PowerDataCollector::kSampleTimeLimitSec| or more older than
-// |sample|.
-template <typename SampleType>
-void AddSample(std::deque<SampleType>* sample_queue, const SampleType& sample) {
-  while (!sample_queue->empty()) {
-    const SampleType& first = sample_queue->front();
-    if (sample.time - first.time >
-        base::TimeDelta::FromSeconds(PowerDataCollector::kSampleTimeLimitSec)) {
-      sample_queue->pop_front();
-    } else {
-      break;
-    }
-  }
-  sample_queue->push_back(sample);
-}
-
-}  // namespace chromeos
-
-#endif  // CHROMEOS_POWER_POWER_DATA_COLLECTOR_H_