Support for chrome.experimental.popup API in ExternalTabContainer views

chrome/browser/extensions/extension_host.h

 // Copyright (c) 2006-2009 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_
 
 #include <string>
 
 #include "base/perftimer.h"
@@ skipping 47 matching lines @@
   ExtensionView* view() const { return view_.get(); }
 #elif defined(OS_LINUX)
   ExtensionViewGtk* view() const { return view_.get(); }
 #elif defined(OS_MACOSX)
   ExtensionViewMac* view() const { return view_.get(); }
 #else
   // TODO(port): implement
   void* view() const { return NULL; }
 #endif
 
-  // Create an ExtensionView and tie it to this host and |browser|.
+  // 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);
 
   Extension* extension() { return extension_; }
   RenderViewHost* render_view_host() const { return render_view_host_; }
   RenderProcessHost* render_process_host() const;
   SiteInstance* site_instance() const;
   bool did_stop_loading() const { return did_stop_loading_; }
   bool document_element_available() const {
     return document_element_available_;
   }
@@ skipping 87 matching lines @@
   // for testing.
   static bool enable_dom_automation_;
 
   // Actually create the RenderView for this host. See CreateRenderViewSoon.
   void CreateRenderViewNow();
 
   // ExtensionFunctionDispatcher::Delegate
   // If this ExtensionHost has a view, this returns the Browser that view is a
   // part of.  If this is a global background page, we use the active Browser
   // instead.
-  virtual Browser* GetBrowser();
+  virtual Browser* GetBrowser() const;
   virtual ExtensionHost* GetExtensionHost() { return this; }
 
   // ExtensionPopupHost::Delegate
   virtual RenderViewHost* GetRenderViewHost() { return render_view_host(); }
 
   // Returns true if we're hosting a background page.
   // This isn't valid until CreateRenderView is called.
   bool is_background_page() const { return !view(); }
 
   // The extension that we're hosting in this view.
@@ skipping 34 matching lines @@
   // are used here, others are not hosted by ExtensionHost.
   ViewType::Type extension_host_type_;
 
   // 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_