Wait properly for renderer crashes

ipc/ipc_channel_proxy.h

 // Copyright (c) 2011 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_CHANNEL_PROXY_H_
 #define IPC_IPC_CHANNEL_PROXY_H_
 #pragma once
 
 #include <vector>
 
@@ skipping 139 matching lines @@
 
   void set_outgoing_message_filter(OutgoingMessageFilter* filter) {
     outgoing_message_filter_ = filter;
   }
 
   // Called to clear the pointer to the IPC message loop when it's going away.
   void ClearIPCMessageLoop();
 
 #if defined(OS_POSIX)
   // Calls through to the underlying channel's methods.
-  int GetClientFileDescriptor() const;
+  int GetClientFileDescriptor();
+  int TakeClientFileDescriptor();
   bool GetClientEuid(uid_t* client_euid) const;
 #endif  // defined(OS_POSIX)
 
  protected:
   class Context;
   // A subclass uses this constructor if it needs to add more information
   // to the internal state.  If create_pipe_now is true, the pipe is created
   // immediately.  Otherwise it's created on the IO thread.
   ChannelProxy(const IPC::ChannelHandle& channel_handle,
                Channel::Mode mode,
@@ skipping 92 matching lines @@
   // can safely be destroyed while the background thread continues to do stuff
   // that involves this data.
   scoped_refptr<Context> context_;
 
   OutgoingMessageFilter* outgoing_message_filter_;
 };
 
 }  // namespace IPC
 
 #endif  // IPC_IPC_CHANNEL_PROXY_H_