Remove unused argument from WebContentsImpl::IsFullscreenForCurrentTab.

content/browser/renderer_host/render_widget_host_delegate.cc

 // 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.
 
 #include "build/build_config.h"
 #include "content/browser/renderer_host/render_widget_host_delegate.h"
 #include "ui/gfx/geometry/rect.h"
 
 namespace content {
 
@@ skipping 35 matching lines @@
 RenderWidgetHostImpl* RenderWidgetHostDelegate::GetFocusedRenderWidgetHost(
     RenderWidgetHostImpl* receiving_widget) {
   return receiving_widget;
 }
 
 gfx::Rect RenderWidgetHostDelegate::GetRootWindowResizerRect(
     RenderWidgetHostImpl* render_widget_host) const {
   return gfx::Rect();
 };
 
-bool RenderWidgetHostDelegate::IsFullscreenForCurrentTab(
-    RenderWidgetHostImpl* render_widget_host) const {
+bool RenderWidgetHostDelegate::IsFullscreenForCurrentTab() const {
   return false;
 }
 
 blink::WebDisplayMode RenderWidgetHostDelegate::GetDisplayMode(
     RenderWidgetHostImpl* render_widget_host) const {
   return blink::WebDisplayModeBrowser;
 }
 
 }  // namespace content