[inspector_protocol] Introduce protocol::Serializable

lib/DispatcherBase_h.template

 // 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 {{"_".join(config.protocol.namespace)}}_DispatcherBase_h
 #define {{"_".join(config.protocol.namespace)}}_DispatcherBase_h
 
 //#include "Collections.h"
 //#include "ErrorSupport.h"
 //#include "Forward.h"
@@ skipping 107 matching lines @@
     bool fallThroughForNotFound() { return m_fallThroughForNotFound; }
     void setFallThroughForNotFound(bool);
     virtual ~UberDispatcher();
 
 private:
     FrontendChannel* m_frontendChannel;
     bool m_fallThroughForNotFound;
     protocol::HashMap<String, std::unique_ptr<protocol::DispatcherBase>> m_dispatchers;
 };
 
+class InternalResponse : public Serializable {
+    PROTOCOL_DISALLOW_COPY(InternalResponse);
+public:
+    static std::unique_ptr<InternalResponse> createResponse(int callId, std::unique_ptr<Serializable> params);
+    static std::unique_ptr<InternalResponse> createNotification(const String& notification, std::unique_ptr<Serializable> params = nullptr);
+
+    String serialize() override;
+
+    ~InternalResponse() override {}
+
+private:
+    InternalResponse(int callId, const String& notification, std::unique_ptr<Serializable> params);
+
+    int m_callId;
+    String m_notification;
+    std::unique_ptr<Serializable> m_params;
+};
+
+class InternalRawNotification : public Serializable {
+public:
+    static std::unique_ptr<InternalRawNotification> create(const String& notification)
+    {
+        return std::unique_ptr<InternalRawNotification>(new InternalRawNotification(notification));
+    }
+    ~InternalRawNotification() override {}
+
+    String serialize() override
+    {
+        return m_notification;
+    }
+
+private:
+  explicit InternalRawNotification(const String& notification)
+    : m_notification(notification)
+  {
+  }
+
+  String m_notification;
+};
+
 {% for namespace in config.protocol.namespace %}
 } // namespace {{namespace}}
 {% endfor %}
 
 #endif // !defined({{"_".join(config.protocol.namespace)}}_DispatcherBase_h)