DevTools: provide an option to return traces as streams

content/browser/devtools/devtools_agent_host_impl.h

 // Copyright (c) 2012 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 CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_AGENT_HOST_IMPL_H_
 #define CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_AGENT_HOST_IMPL_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
+#include "content/browser/devtools/devtools_io_context.h"
 #include "content/common/content_export.h"
 #include "content/common/devtools_messages.h"
 #include "content/public/browser/devtools_agent_host.h"
 
 namespace IPC {
 class Message;
 }
 
 namespace content {
 
@@ skipping 21 matching lines @@
   WebContents* GetWebContents() override;
   void DisconnectWebContents() override;
   void ConnectWebContents(WebContents* wc) override;
 
  protected:
   DevToolsAgentHostImpl();
   ~DevToolsAgentHostImpl() override;
 
   void HostClosed();
   void SendMessageToClient(const std::string& message);
+  devtools::DevToolsIOContext* GetIOContext() { return &io_context_; }
+
   static void NotifyCallbacks(DevToolsAgentHostImpl* agent_host, bool attached);
 
  private:
   friend class DevToolsAgentHost; // for static methods
+  void InnerDetach();
 
   const std::string id_;
   DevToolsAgentHostClient* client_;
+  devtools::DevToolsIOContext io_context_;
 };
 
 class DevToolsMessageChunkProcessor {
  public:
   using SendMessageCallback = base::Callback<void(const std::string&)>;
   explicit DevToolsMessageChunkProcessor(const SendMessageCallback& callback);
   ~DevToolsMessageChunkProcessor();
 
   std::string state_cookie() const { return state_cookie_; }
   void set_state_cookie(const std::string& cookie) { state_cookie_ = cookie; }
   int last_call_id() const { return last_call_id_; }
   void ProcessChunkedMessageFromAgent(const DevToolsMessageChunk& chunk);
 
  private:
   SendMessageCallback callback_;
   std::string message_buffer_;
   uint32 message_buffer_size_;
   std::string state_cookie_;
   int last_call_id_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_AGENT_HOST_IMPL_H_