Standardize usage of virtual/override/final specifiers.

chrome/browser/sync/test/integration/sync_test.h

Index: chrome/browser/sync/test/integration/sync_test.h
diff --git a/chrome/browser/sync/test/integration/sync_test.h b/chrome/browser/sync/test/integration/sync_test.h
index e67ea2ee78707cc825075006f43c6c583fefead9..970c1d6a919251cc113c28272134fd60e95863ae 100644
--- a/chrome/browser/sync/test/integration/sync_test.h
+++ b/chrome/browser/sync/test/integration/sync_test.h
@@ -97,14 +97,14 @@ class SyncTest : public InProcessBrowserTest {
   // A SyncTest must be associated with a particular test type.
   explicit SyncTest(TestType test_type);
 
-  virtual ~SyncTest();
+  ~SyncTest() override;
 
   // Validates command line parameters and creates a local python test server if
   // specified.
-  virtual void SetUp() override;
+  void SetUp() override;
 
   // Brings down local python test server if one was created.
-  virtual void TearDown() override;
+  void TearDown() override;
 
   // Sets up command line flags required for sync tests.
   void SetUpCommandLine(base::CommandLine* cl) override;