Eliminate the LinkInfoBar[Delegate] classes entirely.

chrome/browser/api/infobars/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_API_INFOBARS_INFOBAR_DELEGATE_H_
 #define CHROME_BROWSER_API_INFOBARS_INFOBAR_DELEGATE_H_
 
 #include "base/basictypes.h"
 #include "base/string16.h"
 #include "webkit/glue/window_open_disposition.h"
 
+class AlternateNavInfoBarDelegate;
 class AutoLoginInfoBarDelegate;
 class ConfirmInfoBarDelegate;
 class ExtensionInfoBarDelegate;
 class InfoBar;
 class InfoBarService;
 class InsecureContentInfoBarDelegate;
-class LinkInfoBarDelegate;
 class MediaStreamInfoBarDelegate;
 class PluginInstallerInfoBarDelegate;
 class RegisterProtocolHandlerInfoBarDelegate;
 class SavePasswordInfoBarDelegate;
 class ThemeInstalledInfoBarDelegate;
 class ThreeDAPIInfoBarDelegate;
 class TranslateInfoBarDelegate;
 
 namespace gfx {
 class Image;
 }
 namespace content {
 struct LoadCommittedDetails;
 }
 
 // An interface implemented by objects wishing to control an InfoBar.
 // Implementing this interface is not sufficient to use an InfoBar, since it
-// does not map to a specific InfoBar type. Instead, you must implement either
-// LinkInfoBarDelegate or ConfirmInfoBarDelegate, or override with your own
-// delegate for your own InfoBar variety.
+// does not map to a specific InfoBar type. Instead, you must implement
+// ConfirmInfoBarDelegate, or override with your own delegate for your own
+// InfoBar variety.
 class InfoBarDelegate {
  public:
   // The type of the infobar. It controls its appearance, such as its background
   // color.
   enum Type {
     WARNING_TYPE,
     PAGE_ACTION_TYPE,
   };
 
   enum InfoBarAutomationType {
@@ skipping 41 matching lines @@
 
   // Return the icon to be shown for this InfoBar. If the returned Image is
   // NULL, no icon is shown.
   virtual gfx::Image* GetIcon() const;
 
   // Returns the type of the infobar.  The type determines the appearance (such
   // as background color) of the infobar.
   virtual Type GetInfoBarType() const;
 
   // Type-checking downcast routines:
+  virtual AlternateNavInfoBarDelegate* AsAlternateNavInfoBarDelegate();
   virtual AutoLoginInfoBarDelegate* AsAutoLoginInfoBarDelegate();
   virtual ConfirmInfoBarDelegate* AsConfirmInfoBarDelegate();
   virtual ExtensionInfoBarDelegate* AsExtensionInfoBarDelegate();
   virtual InsecureContentInfoBarDelegate* AsInsecureContentInfoBarDelegate();
-  virtual LinkInfoBarDelegate* AsLinkInfoBarDelegate();
   virtual MediaStreamInfoBarDelegate* AsMediaStreamInfoBarDelegate();
   virtual RegisterProtocolHandlerInfoBarDelegate*
       AsRegisterProtocolHandlerInfoBarDelegate();
   virtual ThemeInstalledInfoBarDelegate* AsThemePreviewInfobarDelegate();
   virtual ThreeDAPIInfoBarDelegate* AsThreeDAPIInfoBarDelegate();
   virtual TranslateInfoBarDelegate* AsTranslateInfoBarDelegate();
 
  protected:
   // If |contents| is non-NULL, its active entry's unique ID will be stored
   // using StoreActiveEntryUniqueID automatically.
@@ skipping 23 matching lines @@
   // opened for. Used to help expire on navigations.
   int contents_unique_id_;
 
   // TODO(pkasting): Remove.
   InfoBarService* owner_;
 
   DISALLOW_COPY_AND_ASSIGN(InfoBarDelegate);
 };
 
 #endif  // CHROME_BROWSER_API_INFOBARS_INFOBAR_DELEGATE_H_