Standardize usage of virtual/override/final specifiers.

chrome/browser/sync/sync_global_error_unittest.cc

Index: chrome/browser/sync/sync_global_error_unittest.cc
diff --git a/chrome/browser/sync/sync_global_error_unittest.cc b/chrome/browser/sync/sync_global_error_unittest.cc
index 7896c57503ab439c9a9fa4d4334c30a00667378d..a7193b37edad80116a61dabbce29723e026429e3 100644
--- a/chrome/browser/sync/sync_global_error_unittest.cc
+++ b/chrome/browser/sync/sync_global_error_unittest.cc
@@ -56,9 +56,9 @@ KeyedService* BuildMockLoginUIService(content::BrowserContext* profile) {
 class SyncGlobalErrorTest : public BrowserWithTestWindowTest {
  public:
   SyncGlobalErrorTest() {}
-  virtual ~SyncGlobalErrorTest() {}
+  ~SyncGlobalErrorTest() override {}
 
-  virtual void SetUp() override {
+  void SetUp() override {
     profile_.reset(ProfileSyncServiceMock::MakeSignedInTestingProfile());
 
     BrowserWithTestWindowTest::SetUp();