Made DesktopEnvironment responsible for creation of the disconnect window.

remoting/host/host_mock_objects.cc

Index: remoting/host/host_mock_objects.cc
diff --git a/remoting/host/host_mock_objects.cc b/remoting/host/host_mock_objects.cc
index 01cbdb7e125f34788bbd9dcf8029c533a864310c..ca3cee68d518e8bc4d510823459f39951c4977d4 100644
--- a/remoting/host/host_mock_objects.cc
+++ b/remoting/host/host_mock_objects.cc
@@ -57,15 +57,6 @@ void MockInputInjector::Start(
   StartPtr(client_clipboard.get());
 }
 
-MockDisconnectWindow::MockDisconnectWindow() {}
-
-MockDisconnectWindow::~MockDisconnectWindow() {}
-
-scoped_ptr<DisconnectWindow> DisconnectWindow::Create(
-    const UiStrings* ui_strings) {
-  return scoped_ptr<DisconnectWindow>(new MockDisconnectWindow());
-}
-
 MockContinueWindow::MockContinueWindow() {}
 
 MockContinueWindow::~MockContinueWindow() {}