Delete IPC::ChannelPosix, IPC::ChannelWin and IPC::AttachmentBroker.

ipc/ipc_message_utils.h

Index: ipc/ipc_message_utils.h
diff --git a/ipc/ipc_message_utils.h b/ipc/ipc_message_utils.h
index 280e99c4f2df2b413fa579ed054a7e9c6124b08e..366ab5f13e69f726a701c679db4ae9ef11a3cf2b 100644
--- a/ipc/ipc_message_utils.h
+++ b/ipc/ipc_message_utils.h
@@ -513,17 +513,6 @@ struct ParamTraits<std::pair<A, B> > {
   }
 };
 
-// IPC ParamTraits -------------------------------------------------------------
-template <>
-struct IPC_EXPORT ParamTraits<BrokerableAttachment::AttachmentId> {
-  typedef BrokerableAttachment::AttachmentId param_type;
-  static void Write(base::Pickle* m, const param_type& p);
-  static bool Read(const base::Pickle* m,
-                   base::PickleIterator* iter,
-                   param_type* r);
-  static void Log(const param_type& p, std::string* l);
-};
-
 // Base ParamTraits ------------------------------------------------------------
 
 template <>