Add the beginning of a simple window manager that we'll support on Windows.

mash/session/session.cc

 // Copyright 2015 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 "mash/session/session.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/message_loop/message_loop.h"
 #include "content/public/common/service_names.mojom.h"
+#include "mash/common/config.h"
 #include "mash/login/public/interfaces/constants.mojom.h"
 #include "mash/login/public/interfaces/login.mojom.h"
 #include "mash/quick_launch/public/interfaces/constants.mojom.h"
 #include "mash/screenlock/public/interfaces/constants.mojom.h"
 #include "services/service_manager/public/cpp/connection.h"
 #include "services/service_manager/public/cpp/connector.h"
 #include "services/service_manager/public/cpp/interface_registry.h"
 #include "services/service_manager/public/cpp/service_context.h"
 
 namespace {
@@ skipping 71 matching lines @@
   StopScreenlock();
 }
 
 void Session::Create(const service_manager::Identity& remote_identity,
                      mojom::SessionRequest request) {
   bindings_.AddBinding(this, std::move(request));
 }
 
 void Session::StartWindowManager() {
   StartRestartableService(
-      "ash",
+      common::GetWindowManagerServiceName(),
       base::Bind(&Session::StartWindowManager,
                  base::Unretained(this)));
 }
 
 void Session::StartQuickLaunch() {
   StartRestartableService(
       quick_launch::mojom::kServiceName,
       base::Bind(&Session::StartQuickLaunch,
                  base::Unretained(this)));
 }
@@ skipping 22 matching lines @@
   // manager.
   if (connection) {
     connection->SetConnectionLostClosure(
         base::Bind(&LogAndCallServiceRestartCallback, url, restart_callback));
     connections_[url] = std::move(connection);
   }
 }
 
 }  // namespace session
 }  // namespace main