Update {virtual,override,final} to follow C++11 style in device.

The Google style guide states that only one of {virtual,override,final}
should be used for each declaration, since override implies virtual and
final implies both virtual and override.

This patch was automatically generated with a ChromeOS build using a
variation of https://codereview.chromium.org/598073004.

BUG=417463
R=reillyg@chromium.org

Review URL: https://codereview.chromium.org/799933008

Cr-Commit-Position: refs/heads/master@{#311826}

1 files changed, 5 insertions, 7 deletions

diff --git a/device/battery/battery_status_manager_chromeos.cc b/device/battery/battery_status_manager_chromeos.cc
index 28a207f..b2ca0d4 100644
--- a/device/battery/battery_status_manager_chromeos.cc
+++ b/device/battery/battery_status_manager_chromeos.cc
@@ -44,7 +44,7 @@ class PowerManagerObserver
  private:
   friend class base::RefCountedThreadSafe<PowerManagerObserver>;
 
-  virtual ~PowerManagerObserver() {}
+  ~PowerManagerObserver() override {}
 
   bool IsBatteryPresent(
       const power_manager::PowerSupplyProperties& proto) const {
@@ -76,7 +76,7 @@ class PowerManagerObserver
   }
 
   // chromeos::PowerManagerClient::Observer:
-  virtual void PowerChanged(
+  void PowerChanged(
       const power_manager::PowerSupplyProperties& proto) override {
     BatteryStatus status;
 
@@ -126,18 +126,16 @@ class BatteryStatusManagerChromeOS
       const BatteryStatusService::BatteryUpdateCallback& callback)
       : observer_(new PowerManagerObserver(callback)) {}
 
-  virtual ~BatteryStatusManagerChromeOS() { observer_->Stop(); }
+  ~BatteryStatusManagerChromeOS() override { observer_->Stop(); }
 
  private:
   // BatteryStatusManager:
-  virtual bool StartListeningBatteryChange() override {
+  bool StartListeningBatteryChange() override {
     observer_->Start();
     return true;
   }
 
-  virtual void StopListeningBatteryChange() override {
-    observer_->Stop();
-  }
+  void StopListeningBatteryChange() override { observer_->Stop(); }
 
   scoped_refptr<PowerManagerObserver> observer_;