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/v8stack_frame_ctocpp.h

@@ -31,7 +31,6 @@ class CefV8StackFrameCToCpp
   explicit CefV8StackFrameCToCpp(cef_v8stack_frame_t* str)
       : CefCToCpp<CefV8StackFrameCToCpp, CefV8StackFrame, cef_v8stack_frame_t>(
           str) {}
-  virtual ~CefV8StackFrameCToCpp() {}
 
   // CefV8StackFrame methods
   virtual bool IsValid() OVERRIDE;