Extracted MetafilePlayer interface from printing::MetafilePlayer.

printing/printing_context_linux.cc

 // Copyright 2014 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 "printing/printing_context_linux.h"
 
 #include "base/logging.h"
 #include "base/values.h"
 #include "printing/metafile.h"
 #include "printing/print_dialog_gtk_interface.h"
@@ skipping 41 matching lines @@
 }
 
 // static
 void PrintingContextLinux::SetPdfPaperSizeFunction(
     gfx::Size (*get_pdf_paper_size)(PrintingContextLinux* context)) {
   DCHECK(get_pdf_paper_size);
   DCHECK(!get_pdf_paper_size_);
   get_pdf_paper_size_ = get_pdf_paper_size;
 }
 
-void PrintingContextLinux::PrintDocument(const Metafile* metafile) {
+void PrintingContextLinux::PrintDocument(const MetafilePlayer& metafile) {
   DCHECK(print_dialog_);
-  DCHECK(metafile);
   print_dialog_->PrintDocument(metafile, document_name_);
 }
 
 void PrintingContextLinux::AskUserForSettings(
     int max_pages,
     bool has_selection,
     const PrintSettingsCallback& callback) {
   if (!print_dialog_) {
     // Can only get here if the renderer is sending bad messages.
     // http://crbug.com/341777
@@ skipping 107 matching lines @@
 void PrintingContextLinux::ReleaseContext() {
   // Intentional No-op.
 }
 
 gfx::NativeDrawingContext PrintingContextLinux::context() const {
   // Intentional No-op.
   return NULL;
 }
 
 }  // namespace printing