Allow ChromeOS file selection dialog to be shown from shell windows.

chrome/browser/extensions/extension_process_manager.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 "base/bind.h"
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/string_number_conversions.h"
@@ skipping 221 matching lines @@
     const Extension* extension, const GURL& url, Browser* browser) {
   return CreateViewHost(
       extension, url, browser, chrome::VIEW_TYPE_EXTENSION_POPUP);
 }
 
 ExtensionHost* ExtensionProcessManager::CreatePopupHost(
     const GURL& url, Browser* browser) {
   return CreateViewHost(url, browser, chrome::VIEW_TYPE_EXTENSION_POPUP);
 }
 
-ExtensionHost* ExtensionProcessManager::CreateDialogHost(
-    const GURL& url, Browser* browser) {
-  return CreateViewHost(url, browser, chrome::VIEW_TYPE_EXTENSION_DIALOG);
+ExtensionHost* ExtensionProcessManager::CreateDialogHost(const GURL& url) {
+  return CreateViewHost(url, NULL, chrome::VIEW_TYPE_EXTENSION_DIALOG);
 }
 
 ExtensionHost* ExtensionProcessManager::CreateInfobarHost(
     const Extension* extension, const GURL& url, Browser* browser) {
   return CreateViewHost(
       extension, url, browser, chrome::VIEW_TYPE_EXTENSION_INFOBAR);
 }
 
 ExtensionHost* ExtensionProcessManager::CreateInfobarHost(
     const GURL& url, Browser* browser) {
@@ skipping 520 matching lines @@
         if (service && service->is_ready())
           CreateBackgroundHostsForProfileStartup(this, service->extensions());
       }
       break;
     }
     default:
       ExtensionProcessManager::Observe(type, source, details);
       break;
   }
 }