Allow severing connection between dispatcher and injector

content/browser/intents/internal_web_intents_dispatcher.cc

 // Copyright (c) 2012 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 "content/browser/intents/internal_web_intents_dispatcher.h"
 
 #include "content/browser/intents/intent_injector.h"
 #include "webkit/glue/web_intent_data.h"
 #include "webkit/glue/web_intent_reply_data.h"
 
@@ skipping 18 matching lines @@
 }
 
 void InternalWebIntentsDispatcher::DispatchIntent(
     WebContents* destination_contents) {
   DCHECK(destination_contents);
   DCHECK(!intent_injector_);
   intent_injector_ = new IntentInjector(destination_contents);
   intent_injector_->SetIntent(this, intent_);
 }
 
+void InternalWebIntentsDispatcher::ResetDispatch() {
+  if (intent_injector_) {
+    intent_injector_->Abandon();
+    intent_injector_ = NULL;
+  }
+}
+
 void InternalWebIntentsDispatcher::SendReplyMessage(
     webkit_glue::WebIntentReplyType reply_type,
     const string16& data) {
   intent_injector_ = NULL;
 
   for (size_t i = 0; i < reply_notifiers_.size(); ++i) {
     if (!reply_notifiers_[i].is_null())
       reply_notifiers_[i].Run(reply_type);
   }
 
   // Notify the callback of the reply.
   if (!reply_callback_.is_null())
     reply_callback_.Run(reply_type, data);
 
   delete this;
 }
 
 void InternalWebIntentsDispatcher::RegisterReplyNotification(
     const content::WebIntentsDispatcher::ReplyNotification& closure) {
   reply_notifiers_.push_back(closure);
 }