Added PPB function to return default print settings

ppapi/api/dev/ppp_printing_dev.idl

 /* 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.
  */
 
 /**
  * Implementation of the Printing interface.
  */
 
+// Note: This version should always match the PPB_Printing_Dev interface.
 label Chrome {
   M21 = 0.6
 };
 
-[assert_size(4)]
-enum PP_PrintOrientation_Dev {
-  PP_PRINTORIENTATION_NORMAL         = 0,
-  PP_PRINTORIENTATION_ROTATED_90_CW  = 1,
-  PP_PRINTORIENTATION_ROTATED_180    = 2,
-  PP_PRINTORIENTATION_ROTATED_90_CCW = 3
-};
-
-[assert_size(4)]
-enum PP_PrintOutputFormat_Dev {
-  PP_PRINTOUTPUTFORMAT_RASTER     = 1u << 0,
-  PP_PRINTOUTPUTFORMAT_PDF        = 1u << 1,
-  PP_PRINTOUTPUTFORMAT_POSTSCRIPT = 1u << 2,
-  PP_PRINTOUTPUTFORMAT_EMF        = 1u << 3
-};
-
-[assert_size(4)]
-enum PP_PrintScalingOption_Dev {
-  PP_PRINTSCALINGOPTION_NONE = 0,
-  PP_PRINTSCALINGOPTION_FIT_TO_PRINTABLE_AREA = 1,
-  PP_PRINTSCALINGOPTION_SOURCE_SIZE = 2
-};
-
-[assert_size(60)]
-struct PP_PrintSettings_Dev {
-  /** This is the size of the printable area in points (1/72 of an inch) */
-  PP_Rect printable_area;
-  PP_Rect content_area;
-  PP_Size paper_size;
-  int32_t dpi;
-  PP_PrintOrientation_Dev orientation;
-  PP_PrintScalingOption_Dev print_scaling_option;
-  PP_Bool grayscale;
-  /** Note that Chrome currently only supports PDF printing. */
-  PP_PrintOutputFormat_Dev format;
-};
-
 /**
  * Specifies a contiguous range of page numbers to be printed.
  * The page numbers use a zero-based index.
  */
 [assert_size(8)]
 struct PP_PrintPageNumberRange_Dev {
   uint32_t first_page_number;
   uint32_t last_page_number;
 };
 
@@ skipping 26 matching lines @@
 
   /** Ends the print session. Further calls to PrintPages will fail. */
   void End([in] PP_Instance instance);
 
   /**
    *  Returns true if the current content should be printed into the full page
    *  and not scaled down to fit within the printer's printable area.
    */
   PP_Bool IsScalingDisabled([in] PP_Instance instance);
 };
-