Standardize usage of virtual/override/final specifiers.

components/suggestions/suggestions_service_unittest.cc

Index: components/suggestions/suggestions_service_unittest.cc
diff --git a/components/suggestions/suggestions_service_unittest.cc b/components/suggestions/suggestions_service_unittest.cc
index 7c68373a44bfa913c9f88e427652c1f2866ceb44..21e11e5d5a7ba03765f32cbca3ab9dcadc510b81 100644
--- a/components/suggestions/suggestions_service_unittest.cc
+++ b/components/suggestions/suggestions_service_unittest.cc
@@ -163,9 +163,9 @@ class SuggestionsServiceTest : public testing::Test {
         mock_suggestions_store_(NULL),
         mock_thumbnail_manager_(NULL) {}
 
-  virtual ~SuggestionsServiceTest() {}
+  ~SuggestionsServiceTest() override {}
 
-  virtual void SetUp() override {
+  void SetUp() override {
     request_context_ = new net::TestURLRequestContextGetter(
         io_message_loop_.message_loop_proxy());
   }