Add IsScalingDisabled and PP_PRINTOUTPUTFORMAT_EMF to pepper printing interface.

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

Index: ppapi/native_client/src/shared/ppapi_proxy/plugin_ppp_printing_rpc_server.cc
diff --git a/ppapi/native_client/src/shared/ppapi_proxy/plugin_ppp_printing_rpc_server.cc b/ppapi/native_client/src/shared/ppapi_proxy/plugin_ppp_printing_rpc_server.cc
index ae6d95b6cbf862182a22dd19ffdd9ca3db810bb2..8cf1e003fc901a15b49c2b409b1e38c6ac97ed51 100644
--- a/ppapi/native_client/src/shared/ppapi_proxy/plugin_ppp_printing_rpc_server.cc
+++ b/ppapi/native_client/src/shared/ppapi_proxy/plugin_ppp_printing_rpc_server.cc
@@ -46,6 +46,23 @@ void PppPrintingRpcServer::PPP_Printing_QuerySupportedFormats(
   rpc->result = NACL_SRPC_RESULT_OK;
 }
 
+void PppPrintingRpcServer::PPP_Printing_IsScalingDisabled(
+    NaClSrpcRpc* rpc,
+    NaClSrpcClosure* done,
+    // inputs
+    PP_Instance instance,
+    // outputs
+    bool* result) {
+  rpc->result = NACL_SRPC_RESULT_APP_ERROR;
+  NaClSrpcClosureRunner runner(done);
+
+  *result = PPPPrintingInterface()->IsScalingDisabled(instance);
+
+  DebugPrintf("PPP_Printing::IsScalingDisabled: "
+              "result=%"NACL_PRId32"\n", *result);
+  rpc->result = NACL_SRPC_RESULT_OK;
+}
+
 void PppPrintingRpcServer::PPP_Printing_Begin(
     NaClSrpcRpc* rpc,
     NaClSrpcClosure* done,