Remove trailing semicolon at the end of a method definition

content/browser/compositor/gpu_vsync_begin_frame_source_unittest.cc

 // Copyright 2017 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 "content/browser/compositor/gpu_vsync_begin_frame_source.h"
 
 #include "base/macros.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace content {
 namespace {
 
 class TestBeginFrameObserver : public cc::BeginFrameObserverBase {
  public:
   TestBeginFrameObserver() = default;
 
   int begin_frame_count() { return begin_frame_count_; }
 
  private:
   bool OnBeginFrameDerivedImpl(const cc::BeginFrameArgs& args) override {
     begin_frame_count_++;
     return true;
   }
 
-  void OnBeginFrameSourcePausedChanged(bool paused) override {};
+  void OnBeginFrameSourcePausedChanged(bool paused) override {}
 
   int begin_frame_count_ = 0;
 
   DISALLOW_COPY_AND_ASSIGN(TestBeginFrameObserver);
 };
 
 class TestGpuVSyncBeginFrameSource : public GpuVSyncBeginFrameSource {
  public:
   explicit TestGpuVSyncBeginFrameSource(GpuVSyncControl* vsync_control)
       : GpuVSyncBeginFrameSource(vsync_control) {}
@@ skipping 140 matching lines @@
   // Adding and removing the second observer shouldn't produce any
   // new notifications.
   begin_frame_source.RemoveObserver(&observer2);
   begin_frame_source.AddObserver(&observer2);
 
   EXPECT_EQ(1, observer2.begin_frame_count());
 }
 
 }  // namespace
 }  // namespace content