remoting: Add AttachmentBroker for daemon and desktop processes

remoting/host/desktop_process.h

Index: remoting/host/desktop_process.h
diff --git a/remoting/host/desktop_process.h b/remoting/host/desktop_process.h
index 42467245b098bb6d16d19cfb20081a475ea7a5dd..e085c6a550c7dfca4b1bd369f254caccf3b63fb8 100644
--- a/remoting/host/desktop_process.h
+++ b/remoting/host/desktop_process.h
@@ -19,6 +19,7 @@
 #include "remoting/host/desktop_session_agent.h"
 
 namespace IPC {
+class AttachmentBrokerUnprivileged;
 class ChannelProxy;
 }  // namespace IPC
 
@@ -76,6 +77,9 @@ class DesktopProcess : public DesktopSessionAgent::Delegate,
   // process.
   std::string daemon_channel_name_;
 
+  // Attachment broker for |daemon_channel_|.
+  scoped_ptr<IPC::AttachmentBrokerUnprivileged> attachment_broker_;
+
   // IPC channel connecting the desktop process with the daemon process.
   scoped_ptr<IPC::ChannelProxy> daemon_channel_;