Use an explicit PID for duplicating Pepper handles rather than the Channel's.

ppapi/proxy/broker_dispatcher.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 "ppapi/proxy/broker_dispatcher.h"
 
 #include "base/sync_socket.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/shared_impl/platform_file.h"
 
 namespace ppapi {
 namespace proxy {
 
 BrokerDispatcher::BrokerDispatcher(PP_ConnectInstance_Func connect_instance)
     : connect_instance_(connect_instance) {
 }
 
 BrokerDispatcher::~BrokerDispatcher() {
 }
 
 bool BrokerDispatcher::InitBrokerWithChannel(
     ProxyChannel::Delegate* delegate,
+    base::ProcessId peer_pid,
     const IPC::ChannelHandle& channel_handle,
     bool is_client) {
-  return ProxyChannel::InitWithChannel(delegate, channel_handle, is_client);
+  return ProxyChannel::InitWithChannel(delegate, peer_pid, channel_handle,
+                                       is_client);
 }
 
 bool BrokerDispatcher::OnMessageReceived(const IPC::Message& msg) {
   // Control messages.
   if (msg.routing_id() == MSG_ROUTING_CONTROL) {
     bool handled = true;
     IPC_BEGIN_MESSAGE_MAP(BrokerDispatcher, msg)
       IPC_MESSAGE_HANDLER(PpapiMsg_ConnectToPlugin, OnMsgConnectToPlugin)
       IPC_MESSAGE_UNHANDLED(handled = false)
     IPC_END_MESSAGE_MAP()
@@ skipping 51 matching lines @@
   // The renderer has crashed or exited. This channel and all instances
   // associated with it are no longer valid.
   // TODO(ddorwin): This causes the broker process to exit, which may not be
   // desirable in some use cases.
   delete this;
 }
 
 
 }  // namespace proxy
 }  // namespace ppapi