Fix crash when displaying system print dialog on Linux.

chrome/common/print_messages.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.
 
 // IPC messages for printing.
 // Multiply-included message file, hence no include guard.
 
 #include <string>
 #include <vector>
 
@@ skipping 233 matching lines @@
 
   // The size of the page the page author specified.
   IPC_STRUCT_MEMBER(gfx::Size, page_size)
 
   // The printable area the page author specified.
   IPC_STRUCT_MEMBER(gfx::Rect, content_area)
 IPC_STRUCT_END()
 
 // Parameters for the IPC message ViewHostMsg_ScriptedPrint
 IPC_STRUCT_BEGIN(PrintHostMsg_ScriptedPrint_Params)
-  IPC_STRUCT_MEMBER(gfx::NativeViewId, host_window_id)
   IPC_STRUCT_MEMBER(int, cookie)
   IPC_STRUCT_MEMBER(int, expected_pages_count)
   IPC_STRUCT_MEMBER(bool, has_selection)
   IPC_STRUCT_MEMBER(printing::MarginType, margin_type)
 IPC_STRUCT_END()
 
 
 // Messages sent from the browser to the renderer.
 
 // Tells the render view to initiate print preview for the entire document.
@@ skipping 151 matching lines @@
                     int /* document cookie */)
 
 // Run a nested message loop in the renderer until print preview for
 // window.print() finishes.
 IPC_SYNC_MESSAGE_ROUTED1_0(PrintHostMsg_ScriptedPrintPreview,
                            bool /* is_modifiable */)
 
 // Notify the browser that the PDF in the initiator renderer has disabled print
 // scaling option.
 IPC_MESSAGE_ROUTED0(PrintHostMsg_PrintPreviewScalingDisabled)