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

ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_file_ref.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/plugin_ppb_file_ref.h"
 
 #include <string.h>
 #include <cmath>
 #include <string>
 
 #include "native_client/src/include/nacl_scoped_ptr.h"
@@ skipping 70 matching lines @@
 
   if (srpc_result == NACL_SRPC_RESULT_OK)
     return static_cast<PP_FileSystemType>(file_system_type);
   return PP_FILESYSTEMTYPE_INVALID;
 }
 
 PP_Var GetName(PP_Resource file_ref) {
   DebugPrintf("PPB_FileRef::GetName: file_ref=%"NACL_PRIu32"\n", file_ref);
 
   PP_Var name = PP_MakeUndefined();
-  nacl_abi_size_t length = kMaxVarSize;
+  nacl_abi_size_t length = kMaxReturnVarSize;
   nacl::scoped_array<char> name_bytes(new char[length]);
   NaClSrpcError srpc_result = PpbFileRefRpcClient::PPB_FileRef_GetName(
       GetMainSrpcChannel(),
       file_ref,
       &length,
       name_bytes.get());
   DebugPrintf("PPB_FileRef::GetName: %s\n", NaClSrpcErrorString(srpc_result));
 
   if (srpc_result == NACL_SRPC_RESULT_OK) {
     if (DeserializeTo(name_bytes.get(), length, 1 /* argc */, &name))
       return name;
   }
   return PP_MakeUndefined();
 }
 
 PP_Var GetPath(PP_Resource file_ref) {
   DebugPrintf("PPB_FileRef::GetPath: file_ref=%"NACL_PRIu32"\n", file_ref);
 
   PP_Var path = PP_MakeUndefined();
-  nacl_abi_size_t length = kMaxVarSize;
+  nacl_abi_size_t length = kMaxReturnVarSize;
   nacl::scoped_array<char> path_bytes(new char[length]);
   NaClSrpcError srpc_result = PpbFileRefRpcClient::PPB_FileRef_GetPath(
       GetMainSrpcChannel(),
       file_ref,
       &length,
       path_bytes.get());
   DebugPrintf("PPB_FileRef::GetPath: %s\n",
               NaClSrpcErrorString(srpc_result));
 
   if (srpc_result == NACL_SRPC_RESULT_OK &&
@@ skipping 120 matching lines @@
     GetPath,
     GetParent,
     MakeDirectory,
     Touch,
     Delete,
     Rename
   };
   return &file_ref_interface;
 }
 }  // namespace ppapi_proxy