Move allocate instance id to chrome/.

chrome/browser/guest_view/web_view/web_view_guest.h

 // Copyright 2014 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_GUEST_VIEW_WEB_VIEW_WEB_VIEW_GUEST_H_
 #define CHROME_BROWSER_GUEST_VIEW_WEB_VIEW_WEB_VIEW_GUEST_H_
 
 #include <vector>
 
 #include "base/observer_list.h"
@@ skipping 109 matching lines @@
   virtual content::WebContents* OpenURLFromTab(
       content::WebContents* source,
       const content::OpenURLParams& params) OVERRIDE;
   virtual void WebContentsCreated(content::WebContents* source_contents,
                                   int opener_render_frame_id,
                                   const base::string16& frame_name,
                                   const GURL& target_url,
                                   content::WebContents* new_contents) OVERRIDE;
 
   // GuestDelegate implementation.
-  virtual void DidAttach() OVERRIDE;
+  virtual void DidAttach(const base::DictionaryValue& extra_params) OVERRIDE;
   virtual void EmbedderDestroyed() OVERRIDE;
   virtual void GuestProcessGone(base::TerminationStatus status) OVERRIDE;
   virtual bool IsDragAndDropEnabled() OVERRIDE;
   virtual void SizeChanged(const gfx::Size& old_size, const gfx::Size& new_size)
       OVERRIDE;
   virtual void RequestPointerLockPermission(
       bool user_gesture,
       bool last_unlocked_by_target,
       const base::Callback<void(bool)>& callback) OVERRIDE;
   virtual void NavigateGuest(const std::string& src) OVERRIDE;
@@ skipping 294 matching lines @@
         name(name) {}
   };
 
   typedef std::map<WebViewGuest*, NewWindowInfo> PendingWindowMap;
   PendingWindowMap pending_new_windows_;
 
   DISALLOW_COPY_AND_ASSIGN(WebViewGuest);
 };
 
 #endif  // CHROME_BROWSER_GUEST_VIEW_WEB_VIEW_WEB_VIEW_GUEST_H_