Always run PolicyWatcher on UI thread in It2Me host.

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 bd0f09b3e965a3d67170f698e483661b411133e8..045a5200d76e1ead6c521396feacc1fcb82078c3 100644
--- a/remoting/host/remoting_me2me_host.cc
+++ b/remoting/host/remoting_me2me_host.cc
@@ -555,7 +555,8 @@ void HostProcess::OnConfigUpdated(
     // loading from policy verifications and move |policy_watcher_|
     // initialization to StartOnNetworkThread().
     policy_watcher_ = policy_hack::PolicyWatcher::Create(
-        nullptr, context_->network_task_runner());
+        nullptr, context_->network_task_runner(),
+        context_->network_task_runner());

[Łukasz Anforowicz, 2015/01/30 05:35:55]

I wonder if we should be using file_task_runner as the last argument
(io_task_runner) here - this thread will end up being used for reading policy
contents from json files / windows registry / mac preferences.

[Sergey Ulanov, 2015/01/30 19:33:45]

Yes. Fixed.

     policy_watcher_->StartWatching(
         base::Bind(&HostProcess::OnPolicyUpdate, base::Unretained(this)),
         base::Bind(&HostProcess::OnPolicyError, base::Unretained(this)));