fix spelling of comments

remoting/jingle_glue/iq_request.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "remoting/jingle_glue/iq_request.h"
 
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/scoped_ptr.h"
 #include "base/string_number_conversions.h"
@@ skipping 290 matching lines @@
   request_->BecomeDefaultHandler();
 }
 
 void SessionStartRequest::OnResponse(const buzz::XmlElement* response) {
   // TODO(ajwong): Techncially, when SessionManager sends IQ packets, it
   // actually expects a response in SessionSendTask(). However, if you look in
   // SessionManager::OnIncomingResponse(), it does nothing with the response.
   // Also, if no response is found, we are supposed to call
   // SessionManager::OnFailedSend().
   //
-  // However, for right now, we just ignore those, and only propogate
+  // However, for right now, we just ignore those, and only propagate
   // messages outside of the request/reply framework to
   // SessionManager::OnIncomingMessage.
 
   if (session_manager_->IsSessionMessage(response)) {
     session_manager_->OnIncomingMessage(response);
   }
 }
 
 void SessionStartRequest::OnOutgoingMessage(
     cricket::SessionManager* session_manager,
     const buzz::XmlElement* stanza) {
   // TODO(ajwong): Are we just supposed to not use |session_manager|?
   DCHECK_EQ(session_manager, session_manager_);
   scoped_ptr<buzz::XmlElement> stanza_copy(new buzz::XmlElement(*stanza));
   request_->SendRawIq(stanza_copy.get());
 }
 
 }  // namespace remoting