Remove trailing semicolon at the end of a method definition

content/browser/generic_sensor_browsertest.cc

 // Copyright 2016 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 "base/command_line.h"
 #include "base/macros.h"
 #include "base/memory/singleton.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/platform_thread.h"
 #include "build/build_config.h"
@@ skipping 29 matching lines @@
   bool StartSensor(
       const device::PlatformSensorConfiguration& configuration) override {
     device::SensorReading reading;
     reading.timestamp =
         (base::TimeTicks::Now() - base::TimeTicks()).InSecondsF();
     reading.values[0] = 50;
     UpdateSensorReading(reading, true);
     return true;
   }
 
-  void StopSensor() override {};
+  void StopSensor() override {}
 
  protected:
   ~FakeAmbientLightSensor() override = default;
   bool CheckSensorConfiguration(
       const device::PlatformSensorConfiguration& configuration) override {
     return true;
   }
   device::PlatformSensorConfiguration GetDefaultConfiguration() override {
     return device::PlatformSensorConfiguration(60 /* frequency */);
   }
@@ skipping 65 matching lines @@
   // expects to get events with fake values then navigates to #pass.
   GURL test_url =
       GetTestUrl("generic_sensor", "ambient_light_sensor_test.html");
   NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 2);
   EXPECT_EQ("pass", shell()->web_contents()->GetLastCommittedURL().ref());
 }
 
 }  //  namespace
 
 }  //  namespace content