Remove support for bitmap printing in pepper

ppapi/api/dev/ppp_printing_dev.idl

Index: ppapi/api/dev/ppp_printing_dev.idl
diff --git a/ppapi/api/dev/ppp_printing_dev.idl b/ppapi/api/dev/ppp_printing_dev.idl
index 62cc23e38582d70fc24991b159427c27f965191a..e824650e9a89d93a33948a1fa415ae956537d3c0 100644
--- a/ppapi/api/dev/ppp_printing_dev.idl
+++ b/ppapi/api/dev/ppp_printing_dev.idl
@@ -21,7 +21,6 @@ enum PP_PrintOrientation_Dev {
 
 [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
@@ -50,9 +49,9 @@ struct PP_PrintPageNumberRange_Dev {
 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);
 
@@ -67,10 +66,8 @@ interface PPP_Printing_Dev {
 
   /**
    * 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,