Change infobar creation to use a public static Create() method on the infobar delegate classes.

chrome/browser/custom_handlers/register_protocol_handler_infobar_delegate.h

 // 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_CUSTOM_HANDLERS_REGISTER_PROTOCOL_HANDLER_INFOBAR_DELEGATE_H_
 #define CHROME_BROWSER_CUSTOM_HANDLERS_REGISTER_PROTOCOL_HANDLER_INFOBAR_DELEGATE_H_
 
 #include "base/string16.h"
 #include "chrome/browser/api/infobars/confirm_infobar_delegate.h"
 #include "chrome/common/custom_handlers/protocol_handler.h"
 
 class InfoBarService;
 class ProtocolHandlerRegistry;
 
 // An InfoBar delegate that enables the user to allow or deny storing credit
 // card information gathered from a form submission.
 class RegisterProtocolHandlerInfoBarDelegate : public ConfirmInfoBarDelegate {
  public:
-  RegisterProtocolHandlerInfoBarDelegate(InfoBarService* infobar_service,
-                                         ProtocolHandlerRegistry* registry,
-                                         const ProtocolHandler& handler);
+  // Creates a new RPH delegate.  Searches |infobar_service| for an existing
+  // delegate for the same |handler|; replaces it with the new delegate if
+  // found, otherwise adds the new infobar to |infobar_service|.
+  static void Create(InfoBarService* infobar_service,
+                     ProtocolHandlerRegistry* registry,
+                     const ProtocolHandler& handler);
 
   // ConfirmInfoBarDelegate:
   virtual Type GetInfoBarType() const OVERRIDE;
   virtual string16 GetMessageText() const OVERRIDE;
   virtual string16 GetButtonLabel(InfoBarButton button) const OVERRIDE;
   virtual bool NeedElevation(InfoBarButton button) const OVERRIDE;
   virtual bool Accept() OVERRIDE;
   virtual bool Cancel() OVERRIDE;
   virtual string16 GetLinkText() const OVERRIDE;
   virtual bool LinkClicked(WindowOpenDisposition disposition) OVERRIDE;
 
   virtual RegisterProtocolHandlerInfoBarDelegate*
       AsRegisterProtocolHandlerInfoBarDelegate() OVERRIDE;
 
   virtual InfoBarAutomationType GetInfoBarAutomationType() const OVERRIDE;
 
-  bool IsReplacedBy(RegisterProtocolHandlerInfoBarDelegate* delegate);
+ private:
+  RegisterProtocolHandlerInfoBarDelegate(InfoBarService* infobar_service,
+                                         ProtocolHandlerRegistry* registry,
+                                         const ProtocolHandler& handler);
 
- private:
   // Returns a user-friendly name for the protocol of this protocol handler.
   string16 GetProtocolName(const ProtocolHandler& handler) const;
   ProtocolHandlerRegistry* registry_;
   ProtocolHandler handler_;
 
   DISALLOW_COPY_AND_ASSIGN(RegisterProtocolHandlerInfoBarDelegate);
 };
 
 #endif  // CHROME_BROWSER_CUSTOM_HANDLERS_REGISTER_PROTOCOL_HANDLER_INFOBAR_DELEGATE_H_