[Chrome] Support NumCopies print preset

ppapi/c/dev/pp_print_settings_dev.h

Index: ppapi/c/dev/pp_print_settings_dev.h
diff --git a/ppapi/c/dev/pp_print_settings_dev.h b/ppapi/c/dev/pp_print_settings_dev.h
index 93e21d4300fff25066ae300f6fbfa23d3e939e0d..8a9f42c64561f145423d5abb6dbc070c75b87ae1 100644
--- a/ppapi/c/dev/pp_print_settings_dev.h
+++ b/ppapi/c/dev/pp_print_settings_dev.h
@@ -47,6 +47,14 @@ typedef enum {
   PP_PRINTSCALINGOPTION_SOURCE_SIZE = 2
 } PP_PrintScalingOption_Dev;
 PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_PrintScalingOption_Dev, 4);
+
+typedef enum {
+  PP_PRINTDUPLEXMODE_NONE = 0,
+  PP_PRINTDUPLEXMODE_SIMPLEX = 1,
+  PP_PRINTDUPLEXMODE_LONG_EDGE = 2,
+  PP_PRINTDUPLEXMODE_SHORT_EDGE = 3
+} PP_PrintDuplexMode_Dev;
+PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_PrintDuplexMode_Dev, 4);
 /**
  * @}
  */
@@ -68,6 +76,12 @@ struct PP_PrintSettings_Dev {
   PP_PrintOutputFormat_Dev format;
 };
 PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_PrintSettings_Dev, 60);
+
+struct PP_PrintRange_Dev {
+  int32_t from;
+  int32_t to;
+};
+PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_PrintRange_Dev, 8);
 /**
  * @}
  */