Readd the clipboard service and get it compiling again.

components/clipboard/clipboard_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 "components/clipboard/clipboard_application_delegate.h"
+
+#include <utility>
+
+#include "components/clipboard/clipboard_standalone_impl.h"
+#include "services/shell/public/cpp/connection.h"
+
+namespace clipboard {
+
+ClipboardApplicationDelegate::ClipboardApplicationDelegate() {}
+
+ClipboardApplicationDelegate::~ClipboardApplicationDelegate() {}
+
+void ClipboardApplicationDelegate::Initialize(shell::Connector* connector,
+                                              const shell::Identity& identity,
+                                              uint32_t id) {
+  tracing_.Initialize(connector, identity.name());
+}
+
+bool ClipboardApplicationDelegate::AcceptConnection(
+    shell::Connection* connection) {
+  connection->AddInterface(this);
+  return true;
+}
+
+void ClipboardApplicationDelegate::Create(
+    shell::Connection* connection,
+    mojo::ClipboardRequest request) {
+  // TODO(erg): Write native implementations of the clipboard. For now, we
+  // just build a clipboard which doesn't interact with the system.
+  new clipboard::ClipboardStandaloneImpl(std::move(request));
+}
+
+}  // namespace clipboard