Pepper SRPC proxy style and type nits

ppapi/native_client/src/shared/ppapi_proxy/browser_ppp_widget.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_widget.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_rect.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 {
 
 const nacl_abi_size_t kPPRectBytes =
     static_cast<nacl_abi_size_t>(sizeof(PP_Rect));
 
 void Invalidate(PP_Instance instance,
                 PP_Resource widget,
                 const struct PP_Rect* dirty_rect) {
-  DebugPrintf("PPP_Widget_Dev::Invalidate: instance=%"NACL_PRIu32"\n",
+  DebugPrintf("PPP_Widget_Dev::Invalidate: instance=%"NACL_PRId32"\n",
               instance);
 
   NaClSrpcError srpc_result =
       PppWidgetRpcClient::PPP_Widget_Invalidate(
           GetMainSrpcChannel(instance),
           instance,
           widget,
           kPPRectBytes,
           reinterpret_cast<char*>(const_cast<struct PP_Rect*>(dirty_rect)));
 
   DebugPrintf("PPP_Widget_Dev::Invalidate: %s\n",
               NaClSrpcErrorString(srpc_result));
 }
 
 }  // namespace
 
 const PPP_Widget_Dev* BrowserWidget::GetInterface() {
   static const PPP_Widget_Dev widget_interface = {
     Invalidate
   };
   return &widget_interface;
 }
 
 }  // namespace ppapi_proxy
-