Fix a crash seen in ChromeFrame when opening a non CF top level tab from a CF page.

chrome_frame/protocol_sink_wrap.cc

Index: chrome_frame/protocol_sink_wrap.cc
===================================================================
--- chrome_frame/protocol_sink_wrap.cc	(revision 185939)
+++ chrome_frame/protocol_sink_wrap.cc	(working copy)
@@ -871,9 +871,8 @@
                             IInternetProtocol* protocol,
                             DWORD options) {
   scoped_refptr<ProtData> prot_data = ProtData::DataFromProtocol(protocol);
-  // TODO(ananta/robertshield)
-  // Write a test for this bug http://crbug.com/178421
-  if (prot_data && !IsChrome(prot_data->renderer_type()))
+  if (prot_data && !IsChrome(prot_data->renderer_type()) &&

[robertshield, 2013/03/04 19:40:39]

Please could you add a fairly detailed comment explaining why we don't
invalidate the ProtData for Chrome-renderers or for external tab requests?

[ananta, 2013/03/04 19:52:50]

Done.

+      !prot_data->is_attach_external_tab_request())
     prot_data->Invalidate();
 
   // We are just pass through at this point, avoid false positive crash