Remove support for bitmap printing in pepper

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.
  */
 
 label Chrome {
   M14 = 0.5
 };
 
 [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,

[viettrungluu, 2012/04/16 04:53:53]

There's no particular reason to remove it from here. AFAIK, we don't support
PostScript or EMF either.

   PP_PRINTOUTPUTFORMAT_PDF        = 1u << 1,
   PP_PRINTOUTPUTFORMAT_POSTSCRIPT = 1u << 2,
   PP_PRINTOUTPUTFORMAT_EMF        = 1u << 3
 };
 
 [assert_size(32)]
 struct PP_PrintSettings_Dev {
   /** This is the size of the printable area in points (1/72 of an inch) */
   PP_Rect printable_area;
   int32_t dpi;
   PP_PrintOrientation_Dev orientation;
   PP_Bool grayscale;
   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;
 };
 
 interface PPP_Printing_Dev {
   /**
    *  Returns a bit field representing the supported print output formats.  For
-   *  example, if only Raster and PostScript are supported,
+   *  example, if only PDF and PostScript are supported,
    *  QuerySupportedFormats returns a value equivalent to:
-   *  (PP_PRINTOUTPUTFORMAT_RASTER | PP_PRINTOUTPUTFORMAT_POSTSCRIPT)
+   *  (PP_PRINTOUTPUTFORMAT_PDF | PP_PRINTOUTPUTFORMAT_POSTSCRIPT)
    */
   uint32_t QuerySupportedFormats([in] PP_Instance instance);
 
   /**
    * Begins a print session with the given print settings. Calls to PrintPage
    * can only be made after a successful call to Begin. Returns the number of
    * pages required for the print output at the given page size (0 indicates
    * a failure).
    */
   int32_t Begin([in] PP_Instance instance,
                 [in] PP_PrintSettings_Dev print_settings);
 
   /**
    * Prints the specified pages using the format specified in Begin.
-   * Returns a resource that represents the printed output.
-   * This is a PPB_ImageData resource if the output format is

[viettrungluu, 2012/04/16 04:53:53]

(Though I always wondered what it was supposed to do for multiple pages in the
raster case. I assumed wrongly that it would call PrintPages() multiple times,
once for each page....)

-   * PP_PrintOutputFormat_Raster and a PPB_Buffer otherwise. Returns 0 on
-   * failure.
+   * Returns a PPB_Buffer resource that represents the printed output. Returns
+   * 0 on failure.
    */
   PP_Resource PrintPages([in] PP_Instance instance,
                          [in] PP_PrintPageNumberRange_Dev page_ranges,
                          [in] uint32_t page_range_count);
 
   /** Ends the print session. Further calls to PrintPage will fail. */

[viettrungluu, 2012/04/16 04:53:53]

I suppose that, while you're here: s/PrintPage/&s/

   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);
 };