Adding support for Win+L key combo in Windows host.

remoting/host/desktop_process_main.cc

Index: remoting/host/desktop_process_main.cc
diff --git a/remoting/host/desktop_process_main.cc b/remoting/host/desktop_process_main.cc
index 825a5f53a3367a8676c04e2810591927dea4f0fe..2fb0767e0c9c4d2058c429e7f677f620e290d737 100644
--- a/remoting/host/desktop_process_main.cc
+++ b/remoting/host/desktop_process_main.cc
@@ -59,7 +59,9 @@ int DesktopProcessMain() {
   desktop_environment_factory.reset(new SessionDesktopEnvironmentFactory(
       ui_task_runner, video_capture_task_runner, input_task_runner,
       ui_task_runner,
-      base::Bind(&DesktopProcess::InjectSas, desktop_process.AsWeakPtr())));
+      base::Bind(&DesktopProcess::InjectSas, desktop_process.AsWeakPtr()),
+      base::Bind(&DesktopProcess::LockWorkStation,
+                 desktop_process.AsWeakPtr())));
 #else  // !defined(OS_WIN)
   desktop_environment_factory.reset(new Me2MeDesktopEnvironmentFactory(
       ui_task_runner, video_capture_task_runner, input_task_runner,