Standardize usage of virtual/override/final in content/browser/

content/browser/geolocation/mock_location_provider.h

Index: content/browser/geolocation/mock_location_provider.h
diff --git a/content/browser/geolocation/mock_location_provider.h b/content/browser/geolocation/mock_location_provider.h
index e0e219997d898e4b3467e430882f6ddf720d4d3b..882a447330d0d5e416f8f90666787b7e3019567c 100644
--- a/content/browser/geolocation/mock_location_provider.h
+++ b/content/browser/geolocation/mock_location_provider.h
@@ -20,16 +20,16 @@ class MockLocationProvider : public LocationProviderBase {
   // Will update |*self_ref| to point to |this| on construction, and to NULL
   // on destruction.
   explicit MockLocationProvider(MockLocationProvider** self_ref);
-  virtual ~MockLocationProvider();
+  ~MockLocationProvider() override;
 
   // Updates listeners with the new position.
   void HandlePositionChanged(const Geoposition& position);
 
   // LocationProvider implementation.
-  virtual bool StartProvider(bool high_accuracy) override;
-  virtual void StopProvider() override;
-  virtual void GetPosition(Geoposition* position) override;
-  virtual void OnPermissionGranted() override;
+  bool StartProvider(bool high_accuracy) override;
+  void StopProvider() override;
+  void GetPosition(Geoposition* position) override;
+  void OnPermissionGranted() override;
 
   Geoposition position_;
   enum State { STOPPED, LOW_ACCURACY, HIGH_ACCURACY } state_;