Implement the basic OS-level printing mechanics on Mac

printing/print_settings.h

 // Copyright (c) 2006-2008 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_PRINT_SETTINGS_H_
 #define PRINTING_PRINT_SETTINGS_H_
 
 #include "base/gfx/rect.h"
 #include "printing/page_overlays.h"
 #include "printing/page_range.h"
 #include "printing/page_setup.h"
 
+#if defined(OS_MACOSX)
+#import <ApplicationServices/ApplicationServices.h>
+#endif
+
 typedef struct HDC__* HDC;
 typedef struct _devicemodeW DEVMODE;
 
 namespace printing {
 
 // OS-independent print settings.
 class PrintSettings {
  public:
   PrintSettings();
 
   // Reinitialize the settings to the default values.
   void Clear();
 
 #ifdef WIN32
   // Reads the settings from the selected device context. Calculates derived
   // values like printable_area_.
   void Init(HDC hdc,
             const DEVMODE& dev_mode,
             const PageRanges& new_ranges,
             const std::wstring& new_device_name,
             bool selection_only);
+#elif defined(OS_MACOSX)
+  // Reads the settings from the given PMPrinter and PMPageFormat.
+  void Init(PMPrinter printer, PMPageFormat page_format,
+            const PageRanges& new_ranges, bool print_selection_only);
 #endif
 
   // Set printer printable area in in pixels.
   void SetPrinterPrintableArea(gfx::Size const& physical_size_pixels,
                                gfx::Rect const& printable_area_pixels);
 
   // Equality operator.
   // NOTE: printer_name is NOT tested for equality since it doesn't affect the
   // output.
   bool Equals(const PrintSettings& rhs) const;
@@ skipping 54 matching lines @@
   // Printer's device effective dots per inch in both axis.
   int dpi_;
 
   // Is the orientation landscape or portrait.
   bool landscape_;
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_PRINT_SETTINGS_H_