Standardize usage of virtual/override/final specifiers.

content/browser/media/webrtc_getusermedia_browsertest.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 "base/command_line.h"
 #include "base/debug/trace_event_impl.h"
 #include "base/json/json_reader.h"
 #include "base/strings/stringprintf.h"
 #include "base/test/trace_event_analyzer.h"
 #include "base/values.h"
@@ skipping 60 matching lines @@
   return function_name + "({" + audio_constraint + video_constraint + "});";
 }
 
 }  // namespace
 
 namespace content {
 
 class WebRtcGetUserMediaBrowserTest: public WebRtcContentBrowserTest {
  public:
   WebRtcGetUserMediaBrowserTest() : trace_log_(NULL) {}
-  virtual ~WebRtcGetUserMediaBrowserTest() {}
+  ~WebRtcGetUserMediaBrowserTest() override {}
 
   void StartTracing() {
     CHECK(trace_log_ == NULL) << "Can only can start tracing once";
     trace_log_ = base::debug::TraceLog::GetInstance();
     base::debug::TraceOptions trace_options(base::debug::RECORD_UNTIL_FULL);
     trace_options.enable_sampling = true;
     trace_log_->SetEnabled(base::debug::CategoryFilter("video"),
                            base::debug::TraceLog::RECORDING_MODE,
                            trace_options);
     // Check that we are indeed recording.
@@ skipping 545 matching lines @@
     {640, 640, 360, 360, 10, 30},
     {640, 640, 480, 480, 10, 30},
     {960, 960, 720, 720, 10, 30},
     {1280, 1280, 720, 720, 10, 30}};
 
 INSTANTIATE_TEST_CASE_P(UserMedia,
                         WebRtcConstraintsBrowserTest,
                         testing::ValuesIn(kAllUserMediaSizes));
 
 }  // namespace content