Standardize usage of virtual/override/final specifiers.

chrome/browser/ui/search/instant_search_prerenderer_unittest.cc

Index: chrome/browser/ui/search/instant_search_prerenderer_unittest.cc
diff --git a/chrome/browser/ui/search/instant_search_prerenderer_unittest.cc b/chrome/browser/ui/search/instant_search_prerenderer_unittest.cc
index bd06fb9eb011b38b01d35dbf4cb643ba99fb3fba..8501ea4e90562bf46ef36321e58abcf9241ec559 100644
--- a/chrome/browser/ui/search/instant_search_prerenderer_unittest.cc
+++ b/chrome/browser/ui/search/instant_search_prerenderer_unittest.cc
@@ -165,7 +165,7 @@ class InstantSearchPrerendererTest : public InstantUnitTestBase {
   InstantSearchPrerendererTest() {}
 
  protected:
-  virtual void SetUp() override {
+  void SetUp() override {
     ASSERT_TRUE(base::FieldTrialList::CreateFieldTrial("EmbeddedSearch",
                                                        "Group1 strk:20"));
     InstantUnitTestBase::SetUp();
@@ -430,7 +430,7 @@ class ReuseInstantSearchBasePageTest : public InstantSearchPrerendererTest {
    ReuseInstantSearchBasePageTest() {}
 
   protected:
-   virtual void SetUp() override {
+   void SetUp() override {
     ASSERT_TRUE(base::FieldTrialList::CreateFieldTrial("EmbeddedSearch",
                                                        "Group1 strk:20"));
     InstantUnitTestBase::SetUp();
@@ -471,7 +471,7 @@ TEST_F(ReuseInstantSearchBasePageTest,
 #if !defined(OS_IOS) && !defined(OS_ANDROID)
 class TestUsePrerenderPage : public InstantSearchPrerendererTest {
  protected:
-  virtual void SetUp() override {
+  void SetUp() override {
     // Disable query extraction flag in field trials.
     ASSERT_TRUE(base::FieldTrialList::CreateFieldTrial(
         "EmbeddedSearch", "Group1 strk:20 query_extraction:0"));