Standardize usage of virtual/override/final specifiers.

chrome/renderer/translate/translate_script_browsertest.cc

 // Copyright 2013 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/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/test/base/chrome_render_view_test.h"
 #include "components/translate/core/common/translate_errors.h"
 #include "grit/components_resources.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
@@ skipping 84 matching lines @@
 
   double GetErrorCode() {
     return ExecuteScriptAndGetNumberResult(kErrorCode);
   }
 
   bool IsLibReady() {
     return ExecuteScriptAndGetBoolResult(kLibReady);
   }
 
  private:
-  virtual void SetUp() override {
-    ChromeRenderViewTest::SetUp();
-  }
+  void SetUp() override { ChromeRenderViewTest::SetUp(); }
 
-  virtual void TearDown() override {
-    ChromeRenderViewTest::TearDown();
-  }
+  void TearDown() override { ChromeRenderViewTest::TearDown(); }
 
   double ExecuteScriptAndGetNumberResult(const std::string& script) {
     WebScriptSource source = WebScriptSource(base::ASCIIToUTF16(script));
     v8::HandleScope handle_scope(v8::Isolate::GetCurrent());
     v8::Handle<v8::Value> result =
         GetMainFrame()->executeScriptAndReturnValue(source);
     if (result.IsEmpty() || !result->IsNumber()) {
       NOTREACHED();
       // TODO(toyoshim): Return NaN here and the real implementation in
       // TranslateHelper::ExecuteScriptAndGetDoubleResult().
@@ skipping 109 matching lines @@
   EXPECT_FALSE(GetError());
   EXPECT_EQ(translate::TranslateErrors::NONE, GetErrorCode());
 
   ExecuteScript(kTranslate);
 
   EXPECT_TRUE(GetError());
   EXPECT_EQ(translate::TranslateErrors::UNSUPPORTED_LANGUAGE, GetErrorCode());
 }
 
 // TODO(toyoshim): Add test for onLoadJavaScript.