Add abstractions that let embedders drive tests of WebContents.

chrome/browser/ui/gtk/create_application_shortcuts_dialog_gtk.h

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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_CREATE_APPLICATION_SHORTCUTS_DIALOG_GTK_H_
 #define CHROME_BROWSER_UI_GTK_CREATE_APPLICATION_SHORTCUTS_DIALOG_GTK_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop_helpers.h"
 #include "chrome/browser/extensions/image_loading_tracker.h"
 #include "chrome/browser/shell_integration.h"
 #include "content/public/browser/browser_thread.h"
 #include "googleurl/src/gurl.h"
 #include "ui/base/gtk/gtk_signal.h"
 
 using content::BrowserThread;
 
 typedef struct _GdkPixbuf GdkPixbuf;
 typedef struct _GtkWidget GtkWidget;
 typedef struct _GtkWindow GtkWindow;
 
 class Extension;
-class TabContents;
 class TabContentsWrapper;
 
 class CreateApplicationShortcutsDialogGtk
     : public base::RefCountedThreadSafe<CreateApplicationShortcutsDialogGtk,
                                         BrowserThread::DeleteOnUIThread> {
  protected:
   explicit CreateApplicationShortcutsDialogGtk(GtkWindow* parent);
   virtual ~CreateApplicationShortcutsDialogGtk();
 
   CHROMEGTK_CALLBACK_1(CreateApplicationShortcutsDialogGtk, void,
@@ skipping 78 matching lines @@
                              const std::string& extension_id,
                              int index) OVERRIDE;
 
  private:
   const Extension* app_;
   ImageLoadingTracker tracker_;
   DISALLOW_COPY_AND_ASSIGN(CreateChromeApplicationShortcutsDialogGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_CREATE_APPLICATION_SHORTCUTS_DIALOG_GTK_H_