Complete SyncMessageFilter initialization after SyncChannel initialization

ipc/ipc_sync_message_filter.h

 // 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.
 
 #ifndef IPC_IPC_SYNC_MESSAGE_FILTER_H_
 #define IPC_IPC_SYNC_MESSAGE_FILTER_H_
 
 #include <set>
 
 #include "base/basictypes.h"
@@ skipping 30 matching lines @@
 
  protected:
   SyncMessageFilter(base::WaitableEvent* shutdown_event,
                     bool is_channel_send_thread_safe);
 
   ~SyncMessageFilter() override;
 
  private:
   friend class SyncChannel;
 
+  void set_is_channel_send_thread_safe(bool is_channel_send_thread_safe) {
+    is_channel_send_thread_safe_ = is_channel_send_thread_safe;
+  }
+
   void SendOnIOThread(Message* message);
   // Signal all the pending sends as done, used in an error condition.
   void SignalAllEvents();
 
   // The channel to which this filter was added.
   Sender* sender_;
 
   // Indicates if |sender_|'s Send method is thread-safe.
   bool is_channel_send_thread_safe_;
 
@@ skipping 13 matching lines @@
   base::Lock lock_;
 
   base::WaitableEvent* shutdown_event_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncMessageFilter);
 };
 
 }  // namespace IPC
 
 #endif  // IPC_IPC_SYNC_MESSAGE_FILTER_H_