Add ui devtools server

ui/devtools/devtools_client.h

+// Copyright 2016 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.
+
+#ifndef UI_DEVTOOLS_CLIENT_H
+#define UI_DEVTOOLS_CLIENT_H
+
+#include <string>
+
+#include "ui/devtools/DOM.h"
+#include "ui/devtools/Forward.h"
+#include "ui/devtools/Protocol.h"
+#include "ui/devtools/StringUtil.h"
+
+namespace ui {
+namespace devtools {
+
+class UiDevToolsServer;
+class UiDevToolsClient : public protocol::FrontendChannel {
+ public:
+  UiDevToolsClient(String name, UiDevToolsServer* server);
+  ~UiDevToolsClient() override;
+
+  void AddDOMBackend(std::unique_ptr<protocol::DOM::Backend> dom_backend);
+
+ private:
+  friend class UiDevToolsServer;
+  void Dispatch(const String& data);
+
+  // FrontendChannel
+  void sendProtocolResponse(int callId, const String& message) override;
+  void sendProtocolNotification(const String& message) override;
+  void flushProtocolNotifications() override;
+
+  std::string name_;
+  int connected_client_id;
+
+  std::unique_ptr<protocol::DOM::Backend> dom_backend_;
+  protocol::UberDispatcher dispatcher_;
+  UiDevToolsServer* server_;
+};
+
+}  // namespace devtools
+}  // namespace ui
+
+#endif  // UI_DEVTOOLS_CLIENT_H_