gtk: Improve fullscreen RenderWidgetHostViewGtk.

chrome/browser/tab_contents/background_contents.cc

 // Copyright (c) 2011 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/tab_contents/background_contents.h"
 
 #include "chrome/browser/background_contents_service.h"
 #include "chrome/browser/browsing_instance.h"
 #include "chrome/browser/desktop_notification_handler.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 216 matching lines @@
       this,
       params.window_container_type,
       params.frame_name);
 }
 
 void BackgroundContents::CreateNewWidget(int route_id,
                                          WebKit::WebPopupType popup_type) {
   NOTREACHED();
 }
 
-void BackgroundContents::CreateNewFullscreenWidget(
-    int route_id, WebKit::WebPopupType popup_type) {
+void BackgroundContents::CreateNewFullscreenWidget(int route_id) {
   NOTREACHED();
 }
 
 void BackgroundContents::ShowCreatedWindow(int route_id,
                                            WindowOpenDisposition disposition,
                                            const gfx::Rect& initial_pos,
                                            bool user_gesture) {
   TabContents* contents = delegate_view_helper_.GetCreatedWindow(route_id);
   if (contents)
     delegate_->AddTabContents(contents, disposition, initial_pos, user_gesture);
@@ skipping 12 matching lines @@
 BackgroundContents*
 BackgroundContents::GetBackgroundContentsByID(int render_process_id,
                                               int render_view_id) {
   RenderViewHost* render_view_host =
       RenderViewHost::FromID(render_process_id, render_view_id);
   if (!render_view_host)
     return NULL;
 
   return render_view_host->delegate()->GetAsBackgroundContents();
 }