Write an error message to the debug log when the host is shutting down because of a policy setting.

remoting/host/remoting_me2me_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.
 //
 // This file implements a standalone host process for Me2Me.
 
 #include <string>
 
 #include "base/at_exit.h"
 #include "base/bind.h"
@@ skipping 782 matching lines @@
 #if defined(OS_MACOSX)
     // On Mac, we run as root at the login screen, so the username won't match.
     // However, there's no need to enforce the policy at the login screen, as
     // the client will have to reconnect if a login occurs.
     if (shutdown && getuid() == 0) {
       shutdown = false;
     }
 #endif
 
     if (shutdown) {
+      LOG(ERROR) << "The host username does not match.";
       ShutdownHost(kUsernameMismatchExitCode);
     }
   } else {
     LOG(INFO) << "Policy does not require host username match.";
   }
 
   return false;
 }
 
 bool HostProcess::OnNatPolicyUpdate(bool nat_traversal_enabled) {
@@ skipping 20 matching lines @@
     // When curtain mode is in effect on Mac, the host process runs in the
     // user's switched-out session, but launchd will also run an instance at
     // the console login screen.  Even if no user is currently logged-on, we
     // can't support remote-access to the login screen because the current host
     // process model disconnects the client during login, which would leave
     // the logged in session un-curtained on the console until they reconnect.
     //
     // TODO(jamiewalch): Fix this once we have implemented the multi-process
     // daemon architecture (crbug.com/134894)
     if (getuid() == 0) {
+      LOG(ERROR) << "Running the host in the console login session is yet not "
+                    "supported.";
       ShutdownHost(kLoginScreenNotSupportedExitCode);
       return false;
     }
   }
 #endif
 
   if (curtain_required_ != curtain_required) {
     if (curtain_required)
-      LOG(ERROR) << "Policy requires curtain-mode.";
+      LOG(INFO) << "Policy requires curtain-mode.";
     else
-      LOG(ERROR) << "Policy does not require curtain-mode.";
+      LOG(INFO) << "Policy does not require curtain-mode.";
     curtain_required_ = curtain_required;
     if (curtaining_host_observer_)
       curtaining_host_observer_->SetEnableCurtaining(curtain_required_);
     return true;
   }
   return false;
 }
 
 bool HostProcess::OnHostTalkGadgetPrefixPolicyUpdate(
     const std::string& talkgadget_prefix) {
@@ skipping 237 matching lines @@
   return exit_code;
 }
 
 }  // namespace remoting
 
 #if !defined(OS_WIN)
 int main(int argc, char** argv) {
   return remoting::HostMain(argc, argv);
 }
 #endif  // !defined(OS_WIN)