Telemetry / Devtools TraceHandler: exposes tracing via dev tools.

content/browser/debugger/devtools_http_handler_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_DEBUGGER_DEVTOOLS_HTTP_HANDLER_IMPL_H_
 #define CONTENT_BROWSER_DEBUGGER_DEVTOOLS_HTTP_HANDLER_IMPL_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 14 matching lines @@
 class Value;
 }
 
 namespace net {
 class StreamListenSocketFactory;
 class URLRequestContextGetter;
 }
 
 namespace content {
 
+class DevToolsBrowserTarget;
 class DevToolsClientHost;
 class RenderViewHost;
 
+class DevToolsServerSender {
+ public:
+  DevToolsServerSender() {}
+
+  virtual void SendJson(int connection_id,

[pfeldman, 2012/12/12 20:17:12]

I think you should make handler return resulting message in a Value format and
serialize it here instead of creating this interface.

[bulach, 2012/12/13 17:36:23]

Done.

+                        net::HttpStatusCode status_code,
+                        base::Value* value,
+                        const std::string& message,
+                        const std::string& jsonp) = 0;
+  virtual void Send200(int connection_id,
+                       const std::string& data,
+                       const std::string& mime_type) = 0;
+  virtual void Send404(int connection_id) = 0;
+  virtual void Send500(int connection_id,
+                       const std::string& message) = 0;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(DevToolsServerSender);
+};
+
 class DevToolsHttpHandlerImpl
     : public DevToolsHttpHandler,
       public NotificationObserver,
       public base::RefCountedThreadSafe<DevToolsHttpHandlerImpl>,
-      public net::HttpServer::Delegate {
+      public net::HttpServer::Delegate,
+      public DevToolsServerSender {
  private:
   struct PageInfo;
   typedef std::vector<PageInfo> PageList;
   friend class base::RefCountedThreadSafe<DevToolsHttpHandlerImpl>;
   friend class DevToolsHttpHandler;
 
   static bool SortPageListByTime(const PageInfo& info1, const PageInfo& info2);
 
   // Takes ownership over |socket_factory|.
   DevToolsHttpHandlerImpl(const net::StreamListenSocketFactory* socket_factory,
@@ skipping 19 matching lines @@
   virtual void OnWebSocketRequest(
       int connection_id,
       const net::HttpServerRequestInfo& info) OVERRIDE;
   virtual void OnWebSocketMessage(int connection_id,
                                   const std::string& data) OVERRIDE;
   virtual void OnClose(int connection_id) OVERRIDE;
 
   void OnJsonRequestUI(int connection_id,
                        const net::HttpServerRequestInfo& info);
   void OnThumbnailRequestUI(int connection_id,
-                       const net::HttpServerRequestInfo& info);
+                            const net::HttpServerRequestInfo& info);
   void OnDiscoveryPageRequestUI(int connection_id);
 
   void OnWebSocketRequestUI(int connection_id,
                             const net::HttpServerRequestInfo& info);
   void OnWebSocketMessageUI(int connection_id, const std::string& data);
+  void OnTraceRequestUI(int connection_id,

[pfeldman, 2012/12/12 20:17:12]

No need for this now.

[bulach, 2012/12/13 17:36:23]

Done.

+                        const net::HttpServerRequestInfo& info);
   void OnCloseUI(int connection_id);
 
   void ResetHandlerThread();
   void ResetHandlerThreadAndRelease();
 
   void Init();
   void Teardown();
 
   void StartHandlerThread();
   void StopHandlerThread();
 
-  void SendJson(int connection_id,
-                net::HttpStatusCode status_code,
-                base::Value* value,
-                const std::string& message,
-                const std::string& jsonp);
-  void Send200(int connection_id,
-               const std::string& data,
-               const std::string& mime_type);
-  void Send404(int connection_id);
-  void Send500(int connection_id,
-               const std::string& message);
+  virtual void SendJson(int connection_id,
+                        net::HttpStatusCode status_code,
+                        base::Value* value,
+                        const std::string& message,
+                        const std::string& jsonp) OVERRIDE;
+  virtual void Send200(int connection_id,
+                       const std::string& data,
+                       const std::string& mime_type) OVERRIDE;
+  virtual void Send404(int connection_id) OVERRIDE;
+  virtual void Send500(int connection_id,
+                       const std::string& message) OVERRIDE;
   void AcceptWebSocket(int connection_id,
                        const net::HttpServerRequestInfo& request);
 
   PageList GeneratePageList();
 
   // Returns the front end url without the host at the beginning.
   std::string GetFrontendURLInternal(const std::string rvh_id,
                                      const std::string& host);
 
   PageInfo CreatePageInfo(RenderViewHost* rvh);
 
   base::DictionaryValue* SerializePageInfo(const PageInfo& page_info,
                                            const std::string& host);
 
   // The thread used by the devtools handler to run server socket.
   scoped_ptr<base::Thread> thread_;
 
   std::string overridden_frontend_url_;
   scoped_ptr<const net::StreamListenSocketFactory> socket_factory_;
   scoped_refptr<net::HttpServer> server_;
   typedef std::map<int, DevToolsClientHost*> ConnectionToClientHostMap;
   ConnectionToClientHostMap connection_to_client_host_ui_;
   scoped_ptr<DevToolsHttpHandlerDelegate> delegate_;
   RenderViewHostBinding* binding_;
   scoped_ptr<RenderViewHostBinding> default_binding_;
   NotificationRegistrar registrar_;
+  scoped_ptr<DevToolsBrowserTarget> browser_target_;
   DISALLOW_COPY_AND_ASSIGN(DevToolsHttpHandlerImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEBUGGER_DEVTOOLS_HTTP_HANDLER_IMPL_H_