Don't use browser windows for platform app shell windows

chrome/browser/extensions/extension_host.h

-// 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_HOST_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_HOST_H_
 #pragma once
 
 #include <string>
 #include <vector>
 
@@ skipping 52 matching lines @@
   const ExtensionViewGtk* view() const { return view_.get(); }
   ExtensionViewGtk* view() { return view_.get(); }
 #endif
 
   // Create an ExtensionView and tie it to this host and |browser|.  Note NULL
   // is a valid argument for |browser|.  Extension views may be bound to
   // tab-contents hosted in ExternalTabContainer objects, which do not
   // instantiate Browser objects.
   void CreateView(Browser* browser);
 
+  // Helper variant of the above for cases where no Browser is present.
+  void CreateViewWithoutBrowser();
+
   const Extension* extension() const { return extension_; }
   const std::string& extension_id() const { return extension_id_; }
   content::WebContents* host_contents() const { return host_contents_.get(); }
   RenderViewHost* render_view_host() const;
   content::RenderProcessHost* render_process_host() const;
   bool did_stop_loading() const { return did_stop_loading_; }
   bool document_element_available() const {
     return document_element_available_;
   }
 
@@ skipping 141 matching lines @@
   // The relevant WebContents associated with this ExtensionHost, if any.
   content::WebContents* associated_web_contents_;
 
   // Used to measure how long it's been since the host was created.
   PerfTimer since_created_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionHost);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_HOST_H_