Don't use browser windows for platform app shell windows

chrome/browser/extensions/extension_process_manager.cc

Index: chrome/browser/extensions/extension_process_manager.cc
diff --git a/chrome/browser/extensions/extension_process_manager.cc b/chrome/browser/extensions/extension_process_manager.cc
index 5d3ffb8cee059e2c8700aea3d8167ce34082cd11..9cf644ccf8f8fe20514ebd2e16689957003605bc 100644
--- a/chrome/browser/extensions/extension_process_manager.cc
+++ b/chrome/browser/extensions/extension_process_manager.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -115,6 +115,19 @@ ExtensionProcessManager::~ExtensionProcessManager() {
   DCHECK(background_hosts_.empty());
 }
 
+ExtensionHost* ExtensionProcessManager::CreateShellHost(
+    const Extension* extension,
+    const GURL& url) {
+  DCHECK(extension);
+  ExtensionHost* host = new ExtensionHost(extension,
+                                          GetSiteInstanceForURL(url),
+                                          url,
+                                          chrome::VIEW_TYPE_APP_SHELL);
+  host->CreateViewWithoutBrowser();
+  OnExtensionHostCreated(host, false /* not a background host */);
+  return host;
+}
+
 ExtensionHost* ExtensionProcessManager::CreateViewHost(
     const Extension* extension,
     const GURL& url,