Update to Chromium revision 40af916d (#303546).

- Standardize usage of virtual/override specifiers in CEF internals (see http://crbug.com/417463).

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@1903 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

libcef_dll/ctocpp/browser_ctocpp.h

@@ -32,7 +32,6 @@ class CefBrowserCToCpp
  public:
   explicit CefBrowserCToCpp(cef_browser_t* str)
       : CefCToCpp<CefBrowserCToCpp, CefBrowser, cef_browser_t>(str) {}
-  virtual ~CefBrowserCToCpp() {}
 
   // CefBrowser methods
   virtual CefRefPtr<CefBrowserHost> GetHost() OVERRIDE;