Linux: Add new CefPrintHandler and CefPrintSettings classes to support printing and a GTK implementation in cefclient (issue #1258).

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@1762 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

tests/cefclient/client_app.cpp

@@ -34,6 +34,8 @@ void ClientApp::OnContextInitialized() {
   ASSERT(manager.get());
   manager->SetSupportedSchemes(cookieable_schemes_);
 
+  print_handler_ = CreatePrintHandler();
+
   BrowserDelegateSet::iterator it = browser_delegates_.begin();
   for (; it != browser_delegates_.end(); ++it)
     (*it)->OnContextInitialized(this);