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

chrome/browser/policy/policy_prefs_browsertest.cc

Index: chrome/browser/policy/policy_prefs_browsertest.cc
diff --git a/chrome/browser/policy/policy_prefs_browsertest.cc b/chrome/browser/policy/policy_prefs_browsertest.cc
index b9ebde3313db10ef23bbc493e93ad422c0549906..973768cb6b7406f27bd8bf196710d2d35f48db46 100644
--- a/chrome/browser/policy/policy_prefs_browsertest.cc
+++ b/chrome/browser/policy/policy_prefs_browsertest.cc
@@ -490,20 +490,18 @@ IN_PROC_BROWSER_TEST_F(PolicyPrefsTestCoverageTest, AllPoliciesHaveATestCase) {
 // Base class for tests that change policy.
 class PolicyPrefsTest : public InProcessBrowserTest {
  protected:
-  virtual void SetUpInProcessBrowserTestFixture() override {
+  void SetUpInProcessBrowserTestFixture() override {
     EXPECT_CALL(provider_, IsInitializationComplete(_))
         .WillRepeatedly(Return(true));
     BrowserPolicyConnector::SetPolicyProviderForTesting(&provider_);
   }
 
-  virtual void SetUpOnMainThread() override {
+  void SetUpOnMainThread() override {
     ui_test_utils::WaitForTemplateURLServiceToLoad(
         TemplateURLServiceFactory::GetForProfile(browser()->profile()));
   }
 
-  virtual void TearDownOnMainThread() override {
-    ClearProviderPolicy();
-  }
+  void TearDownOnMainThread() override { ClearProviderPolicy(); }
 
   void ClearProviderPolicy() {
     provider_.UpdateChromePolicy(PolicyMap());