Standardize usage of virtual/override/final in chrome/browser/devtools/

chrome/browser/devtools/browser_list_tabcontents_provider.h

Index: chrome/browser/devtools/browser_list_tabcontents_provider.h
diff --git a/chrome/browser/devtools/browser_list_tabcontents_provider.h b/chrome/browser/devtools/browser_list_tabcontents_provider.h
index efa1d0833a607532b2460dccc47e02c066469eda..e8a1f30da232750b280faecf09a186aa53f5d639 100644
--- a/chrome/browser/devtools/browser_list_tabcontents_provider.h
+++ b/chrome/browser/devtools/browser_list_tabcontents_provider.h
@@ -20,13 +20,13 @@ class BrowserListTabContentsProvider
 
   explicit BrowserListTabContentsProvider(
       chrome::HostDesktopType host_desktop_type);
-  virtual ~BrowserListTabContentsProvider();
+  ~BrowserListTabContentsProvider() override;
 
   // DevToolsHttpProtocolHandler::Delegate overrides.
-  virtual std::string GetDiscoveryPageHTML() override;
-  virtual bool BundlesFrontendResources() override;
-  virtual base::FilePath GetDebugFrontendDir() override;
-  virtual scoped_ptr<net::StreamListenSocket> CreateSocketForTethering(
+  std::string GetDiscoveryPageHTML() override;
+  bool BundlesFrontendResources() override;
+  base::FilePath GetDebugFrontendDir() override;
+  scoped_ptr<net::StreamListenSocket> CreateSocketForTethering(
       net::StreamListenSocket::Delegate* delegate,
       std::string* name) override;