Lift the 64K message size limit for postMessage to/from NativeClient.

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

Index: ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_url_response_info.cc
===================================================================
--- ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_url_response_info.cc	(revision 117568)
+++ ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_url_response_info.cc	(working copy)
@@ -1,4 +1,4 @@
-// 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.
 
@@ -42,8 +42,8 @@
   NaClSrpcChannel* channel = GetMainSrpcChannel();
 
   PP_Var value = PP_MakeUndefined();
-  nacl_abi_size_t value_size = kMaxVarSize;
-  nacl::scoped_array<char> value_bytes(new char[kMaxVarSize]);
+  nacl_abi_size_t value_size = kMaxReturnVarSize;
+  nacl::scoped_array<char> value_bytes(new char[value_size]);
 
   NaClSrpcError srpc_result =
       PpbURLResponseInfoRpcClient::PPB_URLResponseInfo_GetProperty(