Pepper SRPC proxy style and type nits

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

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 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.
 
 #include "native_client/src/shared/ppapi_proxy/browser_ppp_zoom.h"
 
 // Include file order cannot be observed because ppp_instance declares a
 // structure return type that causes an error on Windows.
 // TODO(sehr, brettw): fix the return types and include order in PPAPI.
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_resource.h"
 #include "srpcgen/ppp_rpc.h"
 #include "native_client/src/include/portability.h"
 #include "native_client/src/shared/ppapi_proxy/browser_globals.h"
 #include "native_client/src/shared/ppapi_proxy/browser_ppp.h"
 #include "native_client/src/shared/ppapi_proxy/utility.h"
 
 namespace ppapi_proxy {
 
 namespace {
 
 void Zoom(PP_Instance instance,
           double factor,
           PP_Bool text_only) {
-  DebugPrintf("PPP_Zoom::Zoom: instance=%"NACL_PRIu32"\n", instance);
+  DebugPrintf("PPP_Zoom::Zoom: instance=%"NACL_PRId32"\n", instance);
 
   NaClSrpcError srpc_result = PppZoomRpcClient::PPP_Zoom_Zoom(
       GetMainSrpcChannel(instance),
       instance,
       factor,
       static_cast<int32_t>(text_only));
 
   DebugPrintf("PPP_Zoom::Zoom: %s\n", NaClSrpcErrorString(srpc_result));
 }
 
 }  // namespace
 
 const PPP_Zoom_Dev* BrowserZoom::GetInterface() {
   static const PPP_Zoom_Dev zoom_interface = {
     Zoom
   };
   return &zoom_interface;
 }
 
 }  // namespace ppapi_proxy
-