Call the DisconnectWindow interface methods on the UI thread.

remoting/host/chromoting_host_unittest.cc

 // Copyright (c) 2011 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 "base/bind.h"
 #include "base/scoped_ptr.h"
 #include "base/task.h"
 #include "remoting/host/capturer_fake.h"
 #include "remoting/host/chromoting_host.h"
 #include "remoting/host/chromoting_host_context.h"
@@ skipping 57 matching lines @@
   }
 
   virtual void SetUp() {
     config_ = new InMemoryHostConfig();
     ON_CALL(context_, main_message_loop())
         .WillByDefault(Return(&message_loop_));
     ON_CALL(context_, encode_message_loop())
         .WillByDefault(Return(&message_loop_));
     ON_CALL(context_, network_message_loop())
         .WillByDefault(Return(&message_loop_));
+    ON_CALL(context_, ui_message_loop())
+        .WillByDefault(Return(&message_loop_));
     EXPECT_CALL(context_, main_message_loop())
         .Times(AnyNumber());
     EXPECT_CALL(context_, encode_message_loop())
         .Times(AnyNumber());
     EXPECT_CALL(context_, network_message_loop())
         .Times(AnyNumber());
+    EXPECT_CALL(context_, ui_message_loop())
+        .Times(AnyNumber());
 
     Capturer* capturer = new CapturerFake();
     event_executor_ = new MockEventExecutor();
     curtain_ = new MockCurtain();
     disconnect_window_ = new MockDisconnectWindow();
     DesktopEnvironment* desktop =
         new DesktopEnvironment(capturer, event_executor_, curtain_,
                                disconnect_window_);
     MockAccessVerifier* access_verifier = new MockAccessVerifier();
 
@@ skipping 364 matching lines @@
         .Times(AnyNumber());
     EXPECT_CALL(*connection_.get(), Disconnect())
         .RetiresOnSaturation();
   }
   SimulateClientConnection(0, true);
   message_loop_.Run();
   host_->set_me2mom(false);
   EXPECT_THAT(curtain_activated, false);
 }
 }  // namespace remoting