Factor out uses of the WebContentsModalDialog interface from platform-independent code

chrome/browser/ui/gtk/constrained_web_dialog_delegate_gtk.cc

 // Copyright 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.
 
 #include "chrome/browser/ui/webui/constrained_web_dialog_delegate_base.h"
 
 #include "chrome/browser/ui/gtk/constrained_window_gtk.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
@@ skipping 10 matching lines @@
 class ConstrainedWebDialogDelegateGtk : public ConstrainedWindowGtkDelegate,
                                         public ConstrainedWebDialogDelegate {
  public:
   ConstrainedWebDialogDelegateGtk(
       content::BrowserContext* browser_context,
       WebDialogDelegate* delegate,
       WebDialogWebContentsDelegate* tab_delegate);
 
   virtual ~ConstrainedWebDialogDelegateGtk() {}
 
-  void set_window(WebContentsModalDialog* dialog) {
-    return impl_->set_window(dialog);
-  }
-
   // ConstrainedWebDialogDelegate interface
   virtual const WebDialogDelegate*
       GetWebDialogDelegate() const OVERRIDE {
     return impl_->GetWebDialogDelegate();
   }
   virtual WebDialogDelegate* GetWebDialogDelegate() OVERRIDE {
     return impl_->GetWebDialogDelegate();
   }
   virtual void OnDialogCloseFromWebUI() OVERRIDE {
     return impl_->OnDialogCloseFromWebUI();
   }
   virtual void ReleaseWebContentsOnDialogClose() OVERRIDE {
     return impl_->ReleaseWebContentsOnDialogClose();
   }
-  virtual WebContentsModalDialog* GetWindow() OVERRIDE {
-    return impl_->GetWindow();
+  virtual gfx::NativeWindow GetNativeWindow() OVERRIDE {
+    return impl_->GetNativeWindow();
   }
   virtual WebContents* GetWebContents() OVERRIDE {
     return impl_->GetWebContents();
   }
 
   // ConstrainedWindowGtkDelegate interface
   virtual GtkWidget* GetWidgetRoot() OVERRIDE {
     return GetWebContents()->GetView()->GetNativeView();
   }
   virtual GtkWidget* GetFocusWidget() OVERRIDE {
@@ skipping 31 matching lines @@
 }
 
 ConstrainedWebDialogDelegate* CreateConstrainedWebDialog(
       content::BrowserContext* browser_context,
       WebDialogDelegate* delegate,
       WebDialogWebContentsDelegate* tab_delegate,
       content::WebContents* web_contents) {
   ConstrainedWebDialogDelegateGtk* constrained_delegate =
       new ConstrainedWebDialogDelegateGtk(
           browser_context, delegate, tab_delegate);
-  WebContentsModalDialog* web_contents_modal_dialog =
-      new ConstrainedWindowGtk(web_contents, constrained_delegate);
-  constrained_delegate->set_window(web_contents_modal_dialog);
+  new ConstrainedWindowGtk(web_contents, constrained_delegate);
   return constrained_delegate;
 }