Remove sandbox on Windows.

components/nacl/browser/nacl_process_host.cc

 // 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 "components/nacl/browser/nacl_process_host.h"
 
 #include <string.h>
 #include <algorithm>
 #include <string>
 #include <utility>
@@ skipping 701 matching lines @@
     delete this;
   } else if (!StartNaClExecution()) {
     delete this;
   }
 }
 
 void NaClProcessHost::ReplyToRenderer(
     ScopedChannelHandle ppapi_channel_handle,
     ScopedChannelHandle trusted_channel_handle,
     ScopedChannelHandle manifest_service_channel_handle) {
-#if defined(OS_WIN)
-  // If we are on 64-bit Windows, the NaCl process's sandbox is
-  // managed by a different process from the renderer's sandbox.  We
-  // need to inform the renderer's sandbox about the NaCl process so
-  // that the renderer can send handles to the NaCl process using
-  // BrokerDuplicateHandle().
-  if (RunningOnWOW64()) {
-    if (!content::BrokerAddTargetPeer(process_->GetData().handle)) {
-      SendErrorToRenderer("BrokerAddTargetPeer() failed");
-      return;
-    }
-  }
-#endif
-
   // Hereafter, we always send an IPC message with handles created above
   // which, on Windows, are not closable in this process.
   std::string error_message;
   base::SharedMemoryHandle crash_info_shmem_renderer_handle;
   if (!crash_info_shmem_.ShareToProcess(nacl_host_message_filter_->PeerHandle(),
                                         &crash_info_shmem_renderer_handle)) {
     // On error, we do not send "IPC::ChannelHandle"s to the renderer process.
     // Note that some other FDs/handles still get sent to the renderer, but
     // will be closed there.
     ppapi_channel_handle.reset();
@@ skipping 592 matching lines @@
     NaClStartDebugExceptionHandlerThread(
         std::move(process), info, base::ThreadTaskRunnerHandle::Get(),
         base::Bind(&NaClProcessHost::OnDebugExceptionHandlerLaunchedByBroker,
                    weak_factory_.GetWeakPtr()));
     return true;
   }
 }
 #endif
 
 }  // namespace nacl