Add named script handler to edge

include/wx/msw/private/webview_edge.h

@@ -38,6 +38,7 @@ public:
     wxString m_pendingURL;
     int m_pendingContextMenuEnabled;
     int m_pendingAccessToDevToolsEnabled;
+    wxString m_scriptMsgHandlerName;
 
     // WebView Events tokens
     EventRegistrationToken m_navigationStartingToken = { };

include/wx/msw/webview_edge.h

@@ -90,6 +90,8 @@ public:
     virtual bool IsAccessToDevToolsEnabled() const wxOVERRIDE;
 
     virtual bool RunScript(const wxString& javascript, wxString* output = NULL) const wxOVERRIDE;
+    virtual bool AddScriptMessageHandler(const wxString& name) wxOVERRIDE;
+    virtual bool RemoveScriptMessageHandler(const wxString& name) wxOVERRIDE;
 
     virtual void RegisterHandler(wxSharedPtr<wxWebViewHandler> handler) wxOVERRIDE;