Add rudimentary mash shelf functionality.

mash/shell/shell_application_delegate.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/shell/shell_application_delegate.h"
 
 #include "base/bind.h"
 #include "mojo/shell/public/cpp/application_connection.h"
 #include "mojo/shell/public/cpp/application_impl.h"
 
 namespace mash {
 namespace shell {
 
 ShellApplicationDelegate::ShellApplicationDelegate() : app_(nullptr) {}
 
 ShellApplicationDelegate::~ShellApplicationDelegate() {}
 
 void ShellApplicationDelegate::Initialize(mojo::ApplicationImpl* app) {
   app_ = app;
   StartBrowserDriver();
   StartWindowManager();
   StartWallpaper();
-  StartSystemUI();
+  StartShelf();
   StartQuickLaunch();
 }
 
 bool ShellApplicationDelegate::ConfigureIncomingConnection(
     mojo::ApplicationConnection* connection) {
   return false;
 }
 
 void ShellApplicationDelegate::StartWindowManager() {
   StartRestartableService(
       "mojo:desktop_wm",
       base::Bind(&ShellApplicationDelegate::StartWindowManager,
                  base::Unretained(this)));
 }
 
 void ShellApplicationDelegate::StartWallpaper() {
   StartRestartableService("mojo:wallpaper",
                           base::Bind(&ShellApplicationDelegate::StartWallpaper,
                                      base::Unretained(this)));
 }
 
-void ShellApplicationDelegate::StartSystemUI() {
-  StartRestartableService("mojo:system_ui",
-                          base::Bind(&ShellApplicationDelegate::StartSystemUI,
+void ShellApplicationDelegate::StartShelf() {
+  StartRestartableService("mojo:shelf",
+                          base::Bind(&ShellApplicationDelegate::StartShelf,
                                      base::Unretained(this)));
 }
 
 void ShellApplicationDelegate::StartBrowserDriver() {
   StartRestartableService(
       "mojo:browser_driver",
       base::Bind(&ShellApplicationDelegate::StartBrowserDriver,
                  base::Unretained(this)));
 }
 
@@ skipping 10 matching lines @@
   // TODO(beng): This would be the place to insert logic that counted restarts
   //             to avoid infinite crash-restart loops.
   scoped_ptr<mojo::ApplicationConnection> connection =
       app_->ConnectToApplication(url);
   connection->SetRemoteServiceProviderConnectionErrorHandler(restart_callback);
   connections_[url] = std::move(connection);
 }
 
 }  // namespace shell
 }  // namespace main