Made the ChromotingHost class not ref-counted.

remoting/host/remoting_me2me_host.cc

Index: remoting/host/remoting_me2me_host.cc
diff --git a/remoting/host/remoting_me2me_host.cc b/remoting/host/remoting_me2me_host.cc
index 3e358a8b3dcc6c35ab7bbfc3d0b8e225286b9dee..5de61661ed8d0e26b43193693738ea9501ca6de2 100644
--- a/remoting/host/remoting_me2me_host.cc
+++ b/remoting/host/remoting_me2me_host.cc
@@ -275,7 +275,7 @@ class HostProcess
   scoped_ptr<LogToServer> log_to_server_;
   scoped_ptr<HostEventLogger> host_event_logger_;
 
-  scoped_refptr<ChromotingHost> host_;
+  scoped_ptr<ChromotingHost> host_;
 
   // Used to keep this HostProcess alive until it is shutdown.
   scoped_refptr<HostProcess> self_;
@@ -883,7 +883,7 @@ void HostProcess::StartHost() {
     network_settings.max_port = NetworkSettings::kDefaultMaxPort;
   }
 
-  host_ = new ChromotingHost(
+  host_.reset(new ChromotingHost(
       signal_strategy_.get(),
       desktop_environment_factory_.get(),
       CreateHostSessionManager(network_settings,
@@ -893,7 +893,7 @@ void HostProcess::StartHost() {
       context_->video_capture_task_runner(),
       context_->video_encode_task_runner(),
       context_->network_task_runner(),
-      context_->ui_task_runner());
+      context_->ui_task_runner()));
 
   // TODO(simonmorris): Get the maximum session duration from a policy.
 #if defined(OS_LINUX)
@@ -974,7 +974,7 @@ void HostProcess::RestartHost() {
   DCHECK_EQ(state_, HOST_STARTED);
 
   state_ = HOST_STOPPING_TO_RESTART;
-  host_->Shutdown(base::Bind(&HostProcess::ShutdownOnNetworkThread, this));
+  ShutdownOnNetworkThread();
 }
 
 void HostProcess::ShutdownHost(int exit_code) {
@@ -990,7 +990,7 @@ void HostProcess::ShutdownHost(int exit_code) {
 
     case HOST_STARTED:
       state_ = HOST_STOPPING;
-      host_->Shutdown(base::Bind(&HostProcess::ShutdownOnNetworkThread, this));
+      ShutdownOnNetworkThread();
       break;
 
     case HOST_STOPPING_TO_RESTART:
@@ -1007,7 +1007,11 @@ void HostProcess::ShutdownHost(int exit_code) {
 void HostProcess::ShutdownOnNetworkThread() {
   DCHECK(context_->network_task_runner()->BelongsToCurrentThread());
 
-  host_ = NULL;
+  if (host_) {
+    host_->Shutdown();
+    host_.reset();
+  }
+
   curtaining_host_observer_.reset();
   host_event_logger_.reset();
   log_to_server_.reset();