Remove dependency of infobars component on the embedder

components/infobars/core/infobar_manager.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 COMPONENTS_INFOBARS_CORE_INFOBAR_MANAGER_H_
 #define COMPONENTS_INFOBARS_CORE_INFOBAR_MANAGER_H_
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "components/infobars/core/infobar_delegate.h"
 
+class ConfirmInfoBarDelegate;
+
 namespace content {
 class WebContents;
 }
 
 namespace infobars {
 
 class InfoBar;
 
 // Provides access to creating, removing and enumerating info bars
 // attached to a tab.
@@ skipping 71 matching lines @@
   virtual int GetActiveEntryID() = 0;
 
  protected:
   // Notifies the observer in |observer_list_|.
   // TODO(droger): Absorb these methods back into their callers once virtual
   // overrides are removed (see http://crbug.com/354380).
   virtual void NotifyInfoBarAdded(InfoBar* infobar);
   virtual void NotifyInfoBarRemoved(InfoBar* infobar, bool animate);
 
  private:
+  // ConfirmInfoBarDelegate is a friend to be able to call CreateConfirmInfoBar.
+  friend class ::ConfirmInfoBarDelegate;
+
   // InfoBars associated with this InfoBarManager.  We own these pointers.
   // However, this is not a ScopedVector, because we don't delete the infobars
   // directly once they've been added to this; instead, when we're done with an
   // infobar, we instruct it to delete itself and then orphan it.  See
   // RemoveInfoBarInternal().
   typedef std::vector<InfoBar*> InfoBars;
 
   void RemoveInfoBarInternal(InfoBar* infobar, bool animate);
 
+  // Returns a confirm infobar that owns |delegate|. Must only be called by
+  // CreateConfirmInfoBar and allow the embedder to provides an implementation
+  // of ConfirmInfoBar.

[Peter Kasting, 2014/12/18 19:23:02]

This comment is super-confused grammatically and content-wise
(CreateConfirmInfoBar must only be called by CreateConfirmInfoBar?).

[sdefresne, 2014/12/19 11:06:15]

Ack. English is hard!

+  virtual scoped_ptr<infobars::InfoBar> CreateConfirmInfoBar(
+      scoped_ptr<ConfirmInfoBarDelegate> delegate) = 0;
+
   InfoBars infobars_;
   bool infobars_enabled_;
 
   ObserverList<Observer, true> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(InfoBarManager);
 };
 
 }  // namespace infobars
 
 #endif  // COMPONENTS_INFOBARS_CORE_INFOBAR_MANAGER_H_