Get printing working in Aura.

printing/printing_context_gtk.h

 // 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.
 
-#ifndef PRINTING_PRINTING_CONTEXT_CAIRO_H_
-#define PRINTING_PRINTING_CONTEXT_CAIRO_H_
+#ifndef PRINTING_PRINTING_CONTEXT_GTK_H_
+#define PRINTING_PRINTING_CONTEXT_GTK_H_
 
 #include <string>
 
 #include "printing/printing_context.h"
 
 namespace base {
 class DictionaryValue;
 }
 
 namespace printing {
 
 class Metafile;
 class PrintDialogGtkInterface;
 
-class PRINTING_EXPORT PrintingContextCairo : public PrintingContext {
+class PRINTING_EXPORT PrintingContextGtk : public PrintingContext {
  public:
-  explicit PrintingContextCairo(const std::string& app_locale);
-  virtual ~PrintingContextCairo();
+  explicit PrintingContextGtk(const std::string& app_locale);
+  virtual ~PrintingContextGtk();
 
-#if !defined(OS_CHROMEOS)
   // Sets the function that creates the print dialog.
   static void SetCreatePrintDialogFunction(
       PrintDialogGtkInterface* (*create_dialog_func)(
-          PrintingContextCairo* context));
+          PrintingContextGtk* context));
 
   // Prints the document contained in |metafile|.
   void PrintDocument(const Metafile* metafile);
-#endif
 
   // PrintingContext implementation.
   virtual void AskUserForSettings(gfx::NativeView parent_view,
                                   int max_pages,
                                   bool has_selection,
                                   PrintSettingsCallback* callback);
   virtual Result UseDefaultSettings();
   virtual Result UpdatePrinterSettings(
       const base::DictionaryValue& job_settings,
       const PageRanges& ranges);
   virtual Result InitWithSettings(const PrintSettings& settings);
   virtual Result NewDocument(const string16& document_name);
   virtual Result NewPage();
   virtual Result PageDone();
   virtual Result DocumentDone();
   virtual void Cancel();
   virtual void ReleaseContext();
   virtual gfx::NativeDrawingContext context() const;
 
  private:
-#if !defined(OS_CHROMEOS)
   string16 document_name_;
   PrintDialogGtkInterface* print_dialog_;
-#endif
 
-  DISALLOW_COPY_AND_ASSIGN(PrintingContextCairo);
+  DISALLOW_COPY_AND_ASSIGN(PrintingContextGtk);
 };
 
 }  // namespace printing
 
-#endif  // PRINTING_PRINTING_CONTEXT_CAIRO_H_
+#endif  // PRINTING_PRINTING_CONTEXT_LINUX_H_