Handle termination/crashes of an extension hosted in the ExtensionDialog.

chrome/browser/ui/views/extensions/extension_dialog.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 "chrome/browser/ui/views/extensions/extension_dialog.h"
 
 #include "chrome/browser/extensions/extension_host.h"
 #include "chrome/browser/extensions/extension_process_manager.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
@@ skipping 18 matching lines @@
     : window_(NULL),
       extension_host_(host),
       observer_(observer) {
   AddRef();  // Balanced in DeleteDelegate();
 
   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_HOST_DID_STOP_LOADING,
                  content::Source<Profile>(host->profile()));
   // Listen for the containing view calling window.close();
   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_HOST_VIEW_SHOULD_CLOSE,
                  content::Source<Profile>(host->profile()));
+  // Listen for a crash or other termination of the extension process.
+  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED,
+                 content::Source<Profile>(host->profile()));
 }
 
 ExtensionDialog::~ExtensionDialog() {
 }
 
 // static
 ExtensionDialog* ExtensionDialog::Show(
     const GURL& url,
     Browser* browser,
     WebContents* web_contents,
@@ skipping 117 matching lines @@
       // Avoid potential overdraw by removing the temporary background after
       // the extension finishes loading.
       extension_host_->view()->set_background(NULL);
       break;
     case chrome::NOTIFICATION_EXTENSION_HOST_VIEW_SHOULD_CLOSE:
       // If we aren't the host of the popup, then disregard the notification.
       if (content::Details<ExtensionHost>(host()) != details)
         return;
       Close();
       break;
+    case chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED:
+      if (content::Details<ExtensionHost>(host()) != details)
+        return;
+      if (observer_)
+        observer_->ExtensionTerminated(this);
+      break;
     default:
       NOTREACHED() << L"Received unexpected notification";
       break;
   }
 }