Add IsScalingDisabled and PP_PRINTOUTPUTFORMAT_EMF to pepper printing interface.

ppapi/native_client/src/shared/ppapi_proxy/ppp_rpc_client.cc

Index: ppapi/native_client/src/shared/ppapi_proxy/ppp_rpc_client.cc
diff --git a/ppapi/native_client/src/shared/ppapi_proxy/ppp_rpc_client.cc b/ppapi/native_client/src/shared/ppapi_proxy/ppp_rpc_client.cc
index 83a594089dbab4e3b54b4e5fda18420614ffa692..5f7e2661fda2572c3a0f5c782fc740e41a8ecbba 100644
--- a/ppapi/native_client/src/shared/ppapi_proxy/ppp_rpc_client.cc
+++ b/ppapi/native_client/src/shared/ppapi_proxy/ppp_rpc_client.cc
@@ -310,6 +310,22 @@ NaClSrpcError PppPrintingRpcClient::PPP_Printing_QuerySupportedFormats(
   return retval;
 }
 
+NaClSrpcError PppPrintingRpcClient::PPP_Printing_IsScalingDisabled(
+    NaClSrpcChannel* channel,
+    PP_Instance instance,
+    bool* result)  {
+  NaClSrpcError retval;
+  retval = NaClSrpcInvokeBySignature(
+      channel,
+      "PPP_Printing_IsScalingDisabled:i:b",
+      instance,
+      result
+  );
+  if (retval == NACL_SRPC_RESULT_INTERNAL)
+    ppapi_proxy::CleanUpAfterDeadNexe(instance);
+  return retval;
+}
+
 NaClSrpcError PppPrintingRpcClient::PPP_Printing_Begin(
     NaClSrpcChannel* channel,
     PP_Instance instance,