Fix crash when displaying system print dialog on Linux.

content/renderer/render_view_impl.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 CONTENT_RENDERER_RENDER_VIEW_IMPL_H_
 #define CONTENT_RENDERER_RENDER_VIEW_IMPL_H_
 #pragma once
 
 #include <deque>
 #include <map>
@@ skipping 642 matching lines @@
       const WebKit::WebURL& frame_url,
       const WebKit::WebCString& data,
       PageSerializationStatus status) OVERRIDE;
 
   // content::RenderView implementation ----------------------------------------
 
   virtual bool Send(IPC::Message* message) OVERRIDE;
   virtual int GetRoutingID() const OVERRIDE;
   virtual int GetPageId() const OVERRIDE;
   virtual gfx::Size GetSize() const OVERRIDE;
-  virtual gfx::NativeViewId GetHostWindow() const OVERRIDE;
   virtual webkit_glue::WebPreferences& GetWebkitPreferences() OVERRIDE;
   virtual WebKit::WebView* GetWebView() OVERRIDE;
   virtual WebKit::WebNode GetFocusedNode() const OVERRIDE;
   virtual WebKit::WebNode GetContextMenuNode() const OVERRIDE;
   virtual bool IsEditableNode(const WebKit::WebNode& node) const OVERRIDE;
   virtual WebKit::WebPlugin* CreatePlugin(
       WebKit::WebFrame* frame,
       const webkit::WebPluginInfo& info,
       const WebKit::WebPluginParams& params) OVERRIDE;
   virtual void EvaluateScript(const string16& frame_xpath,
@@ skipping 756 matching lines @@
   // bunch of stuff, you should probably create a helper class and put your
   // data and methods on that to avoid bloating RenderView more.  You can
   // use the Observer interface to filter IPC messages and receive frame change
   // notifications.
   // ---------------------------------------------------------------------------
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewImpl);
 };
 
 #endif  // CONTENT_RENDERER_RENDER_VIEW_IMPL_H_