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/v8exception_ctocpp.h

@@ -31,7 +31,6 @@ class CefV8ExceptionCToCpp
   explicit CefV8ExceptionCToCpp(cef_v8exception_t* str)
       : CefCToCpp<CefV8ExceptionCToCpp, CefV8Exception, cef_v8exception_t>(
           str) {}
-  virtual ~CefV8ExceptionCToCpp() {}
 
   // CefV8Exception methods
   virtual CefString GetMessage() OVERRIDE;