Introduce InfoBarTabService API.

chrome/browser/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_
 
 #include "base/basictypes.h"
+#include "chrome/browser/api/infobars/infobar_tab_service.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,
+class InfoBarTabHelper : public InfoBarTabService,
+                         public content::WebContentsObserver,
                          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.
-  //
-  // Returns whether |delegate| was successfully added.
-  bool AddInfoBar(InfoBarDelegate* delegate);
+  // InfoBarTabService implementation.
+  virtual bool AddInfoBar(InfoBarDelegate* delegate) OVERRIDE;
+  virtual void RemoveInfoBar(InfoBarDelegate* delegate) OVERRIDE;
+  virtual bool ReplaceInfoBar(InfoBarDelegate* old_delegate,
+                              InfoBarDelegate* new_delegate) OVERRIDE;
+  virtual size_t GetInfoBarCount() const OVERRIDE;
+  virtual InfoBarDelegate* GetInfoBarDelegateAt(size_t index) OVERRIDE;
+  virtual content::WebContents* GetWebContents() OVERRIDE;
 
-  // Removes the InfoBar for the specified |delegate|.
-  //
-  // If infobars are disabled for this tab, this will do nothing, on the
-  // assumption that the matching AddInfoBar() call will have already closed the
-  // delegate (see above).
-  void RemoveInfoBar(InfoBarDelegate* delegate);
-
-  // Replaces one infobar with another, without any animation in between.
-  //
-  // If infobars are disabled for this tab, |new_delegate| is closed immediately
-  // without being added, and nothing else happens.
-  //
-  // Returns whether |new_delegate| was successfully added.
-  //
-  // NOTE: This does not perform any EqualsDelegate() checks like AddInfoBar().
-  bool ReplaceInfoBar(InfoBarDelegate* old_delegate,
-                      InfoBarDelegate* new_delegate);
-
-  // Enumeration and access functions.
-  size_t infobar_count() const { return infobars_.size(); }
-  // WARNING: This does not sanity-check |index|!
-  InfoBarDelegate* GetInfoBarDelegateAt(size_t index);
+  // Enables or disables infobars for the given tab.
   void set_infobars_enabled(bool value) { infobars_enabled_ = value; }
 
   // content::WebContentsObserver overrides:
   virtual void RenderViewGone(base::TerminationStatus status) OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
   // content::NotificationObserver overrides:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
-  // Helper functions for infobars:
-  content::WebContents* web_contents() {
-    return content::WebContentsObserver::web_contents();
-  }
-
  private:
   typedef std::vector<InfoBarDelegate*> InfoBars;
 
   void RemoveInfoBarInternal(InfoBarDelegate* delegate, bool animate);
   void RemoveAllInfoBars(bool animate);
 
   // Message handlers.
   void OnDidBlockDisplayingInsecureContent();
   void OnDidBlockRunningInsecureContent();
 
   // 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_