[Chrome] Support NumCopies print preset

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 df107abe009b69ffa1438172b176a1b39b2d05c7..cb4a8ae924ddc06bd47982099c1f19060646aeca 100644
--- a/ppapi/api/dev/ppp_printing_dev.idl
+++ b/ppapi/api/dev/ppp_printing_dev.idl
@@ -9,7 +9,8 @@
 
 // Note: This version should always match the PPB_Printing_Dev interface.
 label Chrome {
-  M21 = 0.6
+  M21 = 0.6,
+  M37 = 0.7
 };
 
 /**
@@ -57,4 +58,8 @@ interface PPP_Printing_Dev {
    *  and not scaled down to fit within the printer's printable area.
    */
   PP_Bool IsScalingDisabled([in] PP_Instance instance);
+  /**
+   *  Returns the number of copies to be printed.
+   */
+  int32_t GetCopiesToPrint([in] PP_Instance instance);

[yzshen1, 2014/07/16 16:10:46]

You need to add [version=0.7] for this method.

Besides, please consider sending a mail to the pepper team about your proposed
interface change.

[Nikhil, 2014/07/16 17:42:01]

Thanks for reviewing. When I tried adding [version=0.7] earlier, I was not able
to upload the patch. It gave presubmit error and suggested to run the generator
(I didn't know what to do for this).

I'll email pepper team explaining the requirement and proposed change.

[Nikhil, 2014/07/29 10:12:07]

Done.

 };