Standardize usage of virtual/override/final specifiers.

content/browser/web_contents/web_contents_impl_unittest.cc

Index: content/browser/web_contents/web_contents_impl_unittest.cc
diff --git a/content/browser/web_contents/web_contents_impl_unittest.cc b/content/browser/web_contents/web_contents_impl_unittest.cc
index 1a907b1a8bc6c3085c56c6d74ce34ab7e4cea873..a361553dd25adfef25da829d420bb45370cc4b23 100644
--- a/content/browser/web_contents/web_contents_impl_unittest.cc
+++ b/content/browser/web_contents/web_contents_impl_unittest.cc
@@ -252,12 +252,12 @@ class WebContentsImplTestBrowserClient : public TestContentBrowserClient {
 
 class WebContentsImplTest : public RenderViewHostImplTestHarness {
  public:
-  virtual void SetUp() {
+  void SetUp() override {
     RenderViewHostImplTestHarness::SetUp();
     WebUIControllerFactory::RegisterFactory(&factory_);
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     WebUIControllerFactory::UnregisterFactoryForTesting(&factory_);
     RenderViewHostImplTestHarness::TearDown();
   }