Rename ApplicationDelegate to ShellClient

mojo/shell/public/cpp/lib/shell_client.cc

+// Copyright 2014 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 "mojo/shell/public/cpp/shell_client.h"
+
+namespace mojo {
+
+ShellClient::ShellClient() {}
+ShellClient::~ShellClient() {}
+
+void ShellClient::Initialize(Shell* app, const std::string& url,
+                                     uint32_t id) {
+}
+
+bool ShellClient::AcceptConnection(Connection* connection) {
+  return false;
+}
+
+bool ShellClient::ShellConnectionLost() {
+  return true;
+}
+
+void ShellClient::Quit() {}
+
+}  // namespace mojo