IPC: Remove unnecessary conversions of BrokerableAttachment.

ipc/ipc_channel_win.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 "ipc/ipc_channel_win.h"
 
 #include <stdint.h>
 #include <windows.h>
 
 #include "base/auto_reset.h"
@@ skipping 89 matching lines @@
 
   return ProcessMessageForDelivery(message);
 }
 
 bool ChannelWin::ProcessMessageForDelivery(Message* message) {
   // Sending a brokerable attachment requires a call to Channel::Send(), so
   // both Send() and ProcessMessageForDelivery() may be re-entrant.
   if (message->HasBrokerableAttachments()) {
     DCHECK(GetAttachmentBroker());
     DCHECK(peer_pid_ != base::kNullProcessId);
-    for (BrokerableAttachment* attachment :
+    for (const scoped_refptr<IPC::BrokerableAttachment>& attachment :
          message->attachment_set()->GetBrokerableAttachments()) {
       if (!GetAttachmentBroker()->SendAttachmentToProcess(attachment,
                                                           peer_pid_)) {
         delete message;
         return false;
       }
     }
   }
 
 #ifdef IPC_MESSAGE_LOG_ENABLED
@@ skipping 481 matching lines @@
   int secret;
   do {  // Guarantee we get a non-zero value.
     secret = base::RandInt(0, std::numeric_limits<int>::max());
   } while (secret == 0);
 
   id.append(GenerateUniqueRandomChannelID());
   return id.append(base::StringPrintf("\\%d", secret));
 }
 
 }  // namespace IPC