Add IsScalingDisabled and PP_PRINTOUTPUTFORMAT_EMF to pepper printing interface.

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

Index: ppapi/native_client/src/shared/ppapi_proxy/ppp_rpc_server.cc
diff --git a/ppapi/native_client/src/shared/ppapi_proxy/ppp_rpc_server.cc b/ppapi/native_client/src/shared/ppapi_proxy/ppp_rpc_server.cc
index 5275ffb959ffd16744f989260201879ee2890173..adbe252433bfe82e86efe437ed44d668e8938a72 100644
--- a/ppapi/native_client/src/shared/ppapi_proxy/ppp_rpc_server.cc
+++ b/ppapi/native_client/src/shared/ppapi_proxy/ppp_rpc_server.cc
@@ -284,6 +284,22 @@ static void PPP_Printing_QuerySupportedFormatsDispatcher(
   );
 }
 
+static void PPP_Printing_IsScalingDisabledDispatcher(
+    NaClSrpcRpc* rpc,
+    NaClSrpcArg** inputs,
+    NaClSrpcArg** outputs,
+    NaClSrpcClosure* done
+) {
+  bool out = outputs[0]->u.bval;
+  PppPrintingRpcServer::PPP_Printing_IsScalingDisabled(
+      rpc,
+      done,
+      inputs[0]->u.ival,
+      &out
+  );
+  outputs[0]->u.bval = out;
+}
+
 static void PPP_Printing_BeginDispatcher(
     NaClSrpcRpc* rpc,
     NaClSrpcArg** inputs,
@@ -428,6 +444,7 @@ NaClSrpcHandlerDesc PppRpcs::srpc_methods[] = {
   { "PPP_Messaging_HandleMessage:iC:", PPP_Messaging_HandleMessageDispatcher },
   { "PPP_MouseLock_MouseLockLost:i:", PPP_MouseLock_MouseLockLostDispatcher },
   { "PPP_Printing_QuerySupportedFormats:i:i", PPP_Printing_QuerySupportedFormatsDispatcher },
+  { "PPP_Printing_IsScalingDisabled:i:b", PPP_Printing_IsScalingDisabledDispatcher },
   { "PPP_Printing_Begin:iC:i", PPP_Printing_BeginDispatcher },
   { "PPP_Printing_PrintPages:iCi:i", PPP_Printing_PrintPagesDispatcher },
   { "PPP_Printing_End:i:", PPP_Printing_EndDispatcher },