Add IsScalingDisabled and PP_PRINTOUTPUTFORMAT_EMF to pepper printing interface.

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

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // SRPC-abstraction wrappers around PPP_Printing functions.
 
 #include <string.h>
 
 #include "native_client/src/include/portability.h"
 #include "native_client/src/include/portability_process.h"
@@ skipping 88 matching lines @@
     // inputs
     PP_Instance instance) {
   rpc->result = NACL_SRPC_RESULT_APP_ERROR;
   NaClSrpcClosureRunner runner(done);
 
   PPPPrintingInterface()->End(instance);
 
   DebugPrintf("PPP_Printing::End\n");
   rpc->result = NACL_SRPC_RESULT_OK;
 }
+
+void PppPrintingRpcServer::PPP_Printing_IsScalingDisabled(
+    NaClSrpcRpc* rpc,
+    NaClSrpcClosure* done,
+    // inputs
+    PP_Instance instance,
+    // outputs
+    int32_t* /*PP_Bool*/ scaling_disabled) {
+  rpc->result = NACL_SRPC_RESULT_APP_ERROR;
+  NaClSrpcClosureRunner runner(done);
+
+  PP_Bool pp_scaling_disabled =
+      PPPPrintingInterface()->IsScalingDisabled(instance);
+  *scaling_disabled = pp_scaling_disabled == PP_TRUE;
+
+  DebugPrintf("PPP_Printing::IsScalingDisabled: scaling_disabled=%d\n",
+              pp_scaling_disabled);
+  rpc->result = NACL_SRPC_RESULT_OK;
+}