Show a helpful error message if a host domain policy blocked an attempt to use

remoting/host/plugin/host_script_object.h

 // 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.
 
 #ifndef REMOTING_HOST_PLUGIN_HOST_SCRIPT_OBJECT_H_
 #define REMOTING_HOST_PLUGIN_HOST_SCRIPT_OBJECT_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 67 matching lines @@
   virtual void OnShutdown() OVERRIDE;
 
   // Post LogDebugInfo to the correct proxy (and thus, on the correct thread).
   // This should only be called by HostLogHandler. To log to the UI, use the
   // standard LOG(INFO) and it will be sent to this method.
   void PostLogDebugInfo(const std::string& message);
 
   void SetWindow(NPWindow* np_window);
 
  private:
-  // These state values are duplicated in the JS code. Remember to update both
-  // copies when making changes.
+  // These state values are duplicated in host_session.js. Remember to update
+  // both copies when making changes.
   enum State {
     kDisconnected,
     kStarting,
     kRequestedAccessCode,
     kReceivedAccessCode,
     kConnected,
     kDisconnecting,
-    kError
+    kError,
+    kInvalidDomainError
   };
 
   //////////////////////////////////////////////////////////
   // Plugin methods for It2Me host.
 
   // Start connection. args are:
   //   string uid, string auth_token
   // No result.
   bool Connect(const NPVariant* args, uint32_t arg_count, NPVariant* result);
 
@@ skipping 245 matching lines @@
   // SequencedWorkerPool. Problem is that SequencedWorkerPool relies
   // on MessageLoopProxy::current().
   base::Thread worker_thread_;
 
   DISALLOW_COPY_AND_ASSIGN(HostNPScriptObject);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_PLUGIN_HOST_SCRIPT_OBJECT_H_