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

content/renderer/device_sensors/device_motion_event_pump_unittest.cc

 // 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.
 
 #include "device_motion_event_pump.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "content/common/device_sensors/device_motion_hardware_buffer.h"
@@ skipping 27 matching lines @@
   bool did_change_device_motion_;
   blink::WebDeviceMotionData data_;
 
   DISALLOW_COPY_AND_ASSIGN(MockDeviceMotionListener);
 };
 
 class DeviceMotionEventPumpForTesting : public DeviceMotionEventPump {
  public:
   DeviceMotionEventPumpForTesting()
       : DeviceMotionEventPump(0) { }
-  virtual ~DeviceMotionEventPumpForTesting() { }
+  ~DeviceMotionEventPumpForTesting() override {}
 
   void OnDidStart(base::SharedMemoryHandle renderer_handle) {
     DeviceMotionEventPump::OnDidStart(renderer_handle);
   }
-  virtual void SendStartMessage() override { }
-  virtual void SendStopMessage() override { }
-  virtual void FireEvent() override {
+  void SendStartMessage() override {}
+  void SendStopMessage() override {}
+  void FireEvent() override {
     DeviceMotionEventPump::FireEvent();
     Stop();
     base::MessageLoop::current()->QuitWhenIdle();
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DeviceMotionEventPumpForTesting);
 };
 
 class DeviceMotionEventPumpTest : public testing::Test {
@@ skipping 86 matching lines @@
   EXPECT_FALSE(received_data.hasAccelerationZ);
   EXPECT_FALSE(received_data.hasAccelerationIncludingGravityX);
   EXPECT_FALSE(received_data.hasAccelerationIncludingGravityY);
   EXPECT_FALSE(received_data.hasAccelerationIncludingGravityZ);
   EXPECT_FALSE(received_data.hasRotationRateAlpha);
   EXPECT_FALSE(received_data.hasRotationRateBeta);
   EXPECT_FALSE(received_data.hasRotationRateGamma);
 }
 
 }  // namespace content