Moving host status events monitoring to a separate interface (HostStatusMonitor).

remoting/host/chromoting_host.cc

 // 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.
 
 #include "remoting/host/chromoting_host.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/logging.h"
 #include "base/message_loop_proxy.h"
@@ skipping 60 matching lines @@
       input_task_runner_(input_task_runner),
       video_capture_task_runner_(video_capture_task_runner),
       video_encode_task_runner_(video_encode_task_runner),
       network_task_runner_(network_task_runner),
       ui_task_runner_(ui_task_runner),
       signal_strategy_(signal_strategy),
       state_(kInitial),
       protocol_config_(protocol::CandidateSessionConfig::CreateDefault()),
       login_backoff_(&kDefaultBackoffPolicy),
       authenticating_client_(false),
-      reject_authenticating_client_(false) {
+      reject_authenticating_client_(false),
+      ALLOW_THIS_IN_INITIALIZER_LIST(weak_factory_(this)) {
   DCHECK(signal_strategy);
   DCHECK(network_task_runner_->BelongsToCurrentThread());
 
   if (!desktop_environment_factory_->SupportsAudioCapture()) {
     protocol::CandidateSessionConfig::DisableAudioChannel(
         protocol_config_.get());
   }
 }
 
 ChromotingHost::~ChromotingHost() {
@@ skipping 310 matching lines @@
 
   // Notify observers.
   FOR_EACH_OBSERVER(HostStatusObserver, status_observers_,
                     OnShutdown());
 
   for (std::vector<base::Closure>::iterator it = shutdown_tasks_.begin();
        it != shutdown_tasks_.end(); ++it) {
     it->Run();
   }
   shutdown_tasks_.clear();
+
+  weak_factory_.InvalidateWeakPtrs();
 }
 
 }  // namespace remoting