Land http://codereview.chromium.org/159067:

chrome/browser/renderer_host/render_view_host_delegate.h

 // Copyright (c) 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_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/string16.h"
+#include "chrome/common/view_types.h"
 #include "net/base/load_states.h"
 #include "webkit/glue/window_open_disposition.h"
 
 class AutofillForm;
 struct ContextMenuParams;
 class FilePath;
 class GURL;
 struct NativeWebKeyboardEvent;
 class NavigationEntry;
 class Profile;
@@ skipping 343 matching lines @@
   virtual FavIcon* GetFavIconDelegate();
   virtual Autofill* GetAutofillDelegate();
 
   // Gets the URL that is currently being displayed, if there is one.
   virtual const GURL& GetURL() const;
 
   // Return this object cast to a TabContents, if it is one. If the object is
   // not a TabContents, returns NULL.
   virtual TabContents* GetAsTabContents();
 
+  // Return id number of browser window which this object is attached to. If no
+  // browser window is attached to, just return -1.
+  virtual int GetBrowserWindowID() const = 0;
+
+  // Return type of RenderView which is attached with this object.
+  virtual ViewType::Type GetRenderViewType() const = 0;
+
   // The RenderView is being constructed (message sent to the renderer process
   // to construct a RenderView).  Now is a good time to send other setup events
   // to the RenderView.  This precedes any other commands to the RenderView.
   virtual void RenderViewCreated(RenderViewHost* render_view_host) {}
 
   // The RenderView has been constructed.
   virtual void RenderViewReady(RenderViewHost* render_view_host) {}
 
   // The RenderView died somehow (crashed or was killed by the user).
   virtual void RenderViewGone(RenderViewHost* render_view_host) {}
@@ skipping 141 matching lines @@
   virtual void LoadStateChanged(const GURL& url, net::LoadState load_state) {}
 
   // Returns true if this view is used to host an external tab container.
   virtual bool IsExternalTabContainer() const;
 
   // The RenderView has inserted one css file into page.
   virtual void DidInsertCSS() {}
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_