[Chrome] Support NumCopies print preset

ppapi/api/dev/pp_print_settings_dev.idl

Index: ppapi/api/dev/pp_print_settings_dev.idl
diff --git a/ppapi/api/dev/pp_print_settings_dev.idl b/ppapi/api/dev/pp_print_settings_dev.idl
index fafcc08b28bc392e7d21c8d70b24461ab9ca6149..152be1486943d8009b8cdf49dadf1a30ec445796 100644
--- a/ppapi/api/dev/pp_print_settings_dev.idl
+++ b/ppapi/api/dev/pp_print_settings_dev.idl
@@ -30,6 +30,14 @@ enum PP_PrintScalingOption_Dev {
   PP_PRINTSCALINGOPTION_SOURCE_SIZE = 2
 };
 
+[assert_size(4)]
+enum PP_PrintDuplexMode_Dev {
+  PP_PRINTDUPLEXMODE_NONE       = 0,
+  PP_PRINTDUPLEXMODE_SIMPLEX    = 1,
+  PP_PRINTDUPLEXMODE_LONG_EDGE  = 2,
+  PP_PRINTDUPLEXMODE_SHORT_EDGE = 3
+};
+
 [assert_size(60)]
 struct PP_PrintSettings_Dev {
   /** This is the size of the printable area in points (1/72 of an inch). */
@@ -43,3 +51,18 @@ struct PP_PrintSettings_Dev {
   /** Note that Chrome currently only supports PDF printing. */
   PP_PrintOutputFormat_Dev format;
 };
+
+[assert_size(8)]
+struct PP_PrintRange_Dev {
+  int32_t from;
+  int32_t to;
+};
+
+[assert_size(24)]
+struct PP_PrintPresetOptions_Dev {
+  PP_Bool is_scaling_disabled;
+  int32_t copies;
+  PP_PrintDuplexMode_Dev duplex;
+  PP_PrintRange_Dev page_range;
+  int32_t page_range_count;
+};