Create chrome/browser/api directory. Move infobar delegates used by Autofill to the directory.

chrome/browser/api/infobars/infobar_tab_helper.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_INFOBARS_INFOBAR_TAB_HELPER_H_
-#define CHROME_BROWSER_INFOBARS_INFOBAR_TAB_HELPER_H_
+#ifndef CHROME_BROWSER_API_INFOBARS_INFOBAR_TAB_HELPER_H_
+#define CHROME_BROWSER_API_INFOBARS_INFOBAR_TAB_HELPER_H_
 
 #include "base/basictypes.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_contents_observer.h"
 
 class InfoBarDelegate;
 
 // Per-tab info bar manager.
 class InfoBarTabHelper : public content::WebContentsObserver,

[jam, 2012/08/08 16:29:58]

i'm confused, this doesn't seem like an api of infobars that's provided by the
browser. i realize some stuff in here is needed by code that puts up an infobar,
so maybe a new interface should be added here. but this header seems like it
should stay in chrome with the infobar_tab_helper.cc file, which is an internal
implementation detail of TabContents.

                          public content::NotificationObserver {
  public:
   explicit InfoBarTabHelper(content::WebContents* web_contents);
   virtual ~InfoBarTabHelper();
 
   // Adds an InfoBar for the specified |delegate|.
   //
   // If infobars are disabled for this tab or the tab already has a delegate
   // which returns true for InfoBarDelegate::EqualsDelegate(delegate),
   // |delegate| is closed immediately without being added.
@@ skipping 51 matching lines @@
 
   // Delegates for InfoBars associated with this InfoBarTabHelper.
   InfoBars infobars_;
   bool infobars_enabled_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(InfoBarTabHelper);
 };
 
-#endif  // CHROME_BROWSER_INFOBARS_INFOBAR_TAB_HELPER_H_
+#endif  // CHROME_BROWSER_API_INFOBARS_INFOBAR_TAB_HELPER_H_