Suspend (rather than shut down) the host upon policy errors.

remoting/resources/remoting_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <grit base_dir="." current_release="1" enc_check="möl" latest_public_release="0" source_lang_id="en">
   <outputs>
     <output filename="remoting/base/string_resources.h" type="rc_header">
       <emit emit_type="prepend"/>
     </output>
 
     <output filename="remoting/resources/am.pak" lang="am" type="data_package"/>
     <output filename="remoting/resources/ar.pak" lang="ar" type="data_package"/>
@@ skipping 867 matching lines @@
         Host is configured with invalid OAuth credentials.
       </message>
       <message desc="Error message indicating that the host is offline, because the host is owned by a user from a domain different than the domain mandated by RemoteAccessHostDomain policy."
                name="IDS_OFFLINE_REASON_INVALID_HOST_DOMAIN">
         Invalid host owner domain.
       </message>
       <message desc="Error message indicating that the host is offline, because RemoteAccessHostRequireCurtain policy requires curtain mode, which is not supported when 'launchd' runs an instance of the host at the console login screen on a Mac."
                name="IDS_OFFLINE_REASON_LOGIN_SCREEN_NOT_SUPPORTED">
         Host running at the console logic screen has shutdown to support curtain mode by switching to a host running in a user-specific session.
       </message>
+      <message desc="Error message indicating that the host is offline, because the host policy was unreadable (unparseable, inaccessible, mistyped or malformed)."
+               name="IDS_OFFLINE_REASON_POLICY_READ_ERROR">
+        Host failed to read the policy.
+      </message>
+      <message desc="Error message indicating that the host is temporarily offline, because the host is restarting (most likely due to a policy or config change that requires shutting down existing connections first)."
+               name="IDS_OFFLINE_REASON_RESTARTING">

[Wez, 2015/02/12 21:07:07]

Do these really need localizing? Where in the UI are they displayed?

[Łukasz Anforowicz, 2015/02/12 22:51:13]

Good question.  An alternative would be to only localize "This is a
host-offline-reason" part and append host-offline-reason verbatim, saying that
this is a "code" (and any similarity to English is accidental :-).  
Today, the WebApp UI shows this in a tooltop shown when hovering a mouse over a
hostname of a host that sent a host-offline-reason.  We need to add UI for
Android and iOS.  And I think we need to replace the tooltip with something more
discoverable (Jamie and Kelvin disagree / think that the tooltip is good
enough).

Also - today the user gets a somewhat cryptic, non-actionable, although at least
localized host-offline-reason.  Ideally we would guide the user to instructions
for how to analyze the host-side logs to get more info about the errors.  Maybe
we can add a link to the localized string?  (but today we don't have public
chromoting docs where "what do I do after getting host-offline-reason X" could
go).

[Wez, 2015/02/14 00:49:15]

No, if these end up in UX they should be localized; that's fine.

+        Host is restarting.
+      </message>
+      <message desc="Error message indicating that the host is offline, because another process has requested the host to shut down (via a SIGTERM signal)."
+               name="IDS_OFFLINE_REASON_SUCCESS_EXIT">
+        Host has shut down.
+      </message>
       <message desc="Error message indicating that the host is offline, because RemoteAccessHostMatchUsername policy is enabled and there is a mismatch between the name of the local user (that the host is associated with) and the name of the Google account registered as the host owner (i.e. 'johndoe' if the host is owned by 'johndoe@example.com' Google account)"
                name="IDS_OFFLINE_REASON_USERNAME_MISMATCH">
         Invalid host owner.
       </message>
       <message desc="Description of why host is offline, when client gets a host-offline-reason it doesn't recognize."
                name="IDS_OFFLINE_REASON_UNKNOWN">
         Unrecognized host error: <ph name="HOST_OFFLINE_REASON">$1<ex>EXIT_CODE_FROM_HOST_NEWER_THAN_CLIENT</ex></ph>.
       </message>
       <message desc="Modified version of the host name shown for hosts that are running an out-of-date version of the Me2Me host software." name="IDS_UPDATE_REQUIRED">
         <ph name="HOSTNAME">$1<ex>My Linux desktop</ex></ph> (out-of-date)
@@ skipping 190 matching lines @@
       <message desc="Label for the button to decline sharing the computer in 'It2Me' mode." name="IDS_SHARE_CONFIRM_DIALOG_DECLINE" >
         Cancel
       </message>
       <message desc="Text shown in tooltip to inform the user that a setting is managed by domain policy." name="IDS_SETTING_MANAGED_BY_POLICY">
         This setting is managed by your domain policy.
       </message>
 
     </messages>
   </release>
 </grit>