Standardize usage of virtual/override/final in chrome/browser/extensions/

chrome/browser/extensions/hotword_browsertest.cc

Index: chrome/browser/extensions/hotword_browsertest.cc
diff --git a/chrome/browser/extensions/hotword_browsertest.cc b/chrome/browser/extensions/hotword_browsertest.cc
index 47bf668232506608b7160ae0725dfd11511c7e00..6de7de505c51380778364e0dd7d11532270503bb 100644
--- a/chrome/browser/extensions/hotword_browsertest.cc
+++ b/chrome/browser/extensions/hotword_browsertest.cc
@@ -29,7 +29,7 @@ class HotwordBrowserTest : public ExtensionBrowserTest {
   virtual ~HotwordBrowserTest() { }
 
  protected:
-  virtual void SetUpInProcessBrowserTestFixture() override {
+  void SetUpInProcessBrowserTestFixture() override {
     ExtensionBrowserTest::SetUpInProcessBrowserTestFixture();
 
     // Force the VoiceTrigger field trial on to enable the hotword_helper
@@ -46,7 +46,7 @@ class HotwordBrowserTest : public ExtensionBrowserTest {
         FeatureSwitch::OVERRIDE_ENABLED);
   }
 
-  virtual void SetUpOnMainThread() override {
+  void SetUpOnMainThread() override {
     ExtensionBrowserTest::SetUpOnMainThread();
 
     // Errors are only kept if we have Developer Mode enabled.