Standardize usage of virtual/override/final specifiers.

chrome/browser/chrome_content_browser_client_unittest.cc

Index: chrome/browser/chrome_content_browser_client_unittest.cc
diff --git a/chrome/browser/chrome_content_browser_client_unittest.cc b/chrome/browser/chrome_content_browser_client_unittest.cc
index 3ff767c4551f5a9c01e31be7bc89c738b41877d2..9d9dbebae64203612c737a05d4c8ecd32bdf7eee 100644
--- a/chrome/browser/chrome_content_browser_client_unittest.cc
+++ b/chrome/browser/chrome_content_browser_client_unittest.cc
@@ -40,7 +40,7 @@ class DisableWebRtcEncryptionFlagTest : public testing::Test {
         to_command_line_(CommandLine::NO_PROGRAM) {}
 
  protected:
-  virtual void SetUp() {
+  void SetUp() override {
     from_command_line_.AppendSwitch(switches::kDisableWebRtcEncryption);
   }
 
@@ -93,7 +93,7 @@ namespace content {
 
 class InstantNTPURLRewriteTest : public BrowserWithTestWindowTest {
  protected:
-  virtual void SetUp() override {
+  void SetUp() override {
     BrowserWithTestWindowTest::SetUp();
     field_trial_list_.reset(new base::FieldTrialList(
         new metrics::SHA1EntropyProvider("42")));