browser/ui: Share BookmarkBarInstructions delegate between gtk and views.

chrome/browser/ui/gtk/bookmarks/bookmark_bar_instructions_gtk.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_UI_GTK_BOOKMARKS_BOOKMARK_BAR_INSTRUCTIONS_GTK_H_
 #define CHROME_BROWSER_UI_GTK_BOOKMARKS_BOOKMARK_BAR_INSTRUCTIONS_GTK_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "ui/base/gtk/gtk_signal.h"
 
 typedef struct _GtkWidget GtkWidget;
 class GtkThemeService;
 class Profile;
 
+namespace chrome {
+class BookmarkBarInstructionsDelegate;
+}
+
 class BookmarkBarInstructionsGtk : public content::NotificationObserver {
  public:
-  // The delegate is notified once the user clicks on the link to import
-  // bookmarks.
-  class Delegate {
-   public:
-    virtual void ShowImportDialog() = 0;
-
-   protected:
-    virtual ~Delegate() {}
-  };
-
-  BookmarkBarInstructionsGtk(Delegate* delegate, Profile* profile);
+  BookmarkBarInstructionsGtk(chrome::BookmarkBarInstructionsDelegate* delegate,
+                             Profile* profile);
 
   // Get the native widget.
   GtkWidget* widget() const { return instructions_hbox_; }
 
  private:
   // Overridden from content::NotificationObserver:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
   CHROMEGTK_CALLBACK_0(BookmarkBarInstructionsGtk, void, OnButtonClick);
 
   // Sets the correct color for |instructions_label_| and |instructions_link_|.
   void UpdateColors();
 
-  Delegate* delegate_;
+  chrome::BookmarkBarInstructionsDelegate* delegate_;
 
   Profile* profile_;
 
   GtkThemeService* theme_service_;
 
   // HBox that holds the the label and link of bookmark bar import promotion.
   GtkWidget* instructions_hbox_;
   GtkWidget* instructions_label_;
   GtkWidget* instructions_link_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(BookmarkBarInstructionsGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_BOOKMARKS_BOOKMARK_BAR_INSTRUCTIONS_GTK_H_