Implementing uploading of a WebRTC diagnostic log.

chrome/browser/media/webrtc_logging_handler_host.h

 // Copyright 2013 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 CHROME_BROWSER_MEDIA_WEBRTC_LOGGING_HANDLER_HOST_H_
 #define CHROME_BROWSER_MEDIA_WEBRTC_LOGGING_HANDLER_HOST_H_
 
 #include "base/basictypes.h"
-#include "base/shared_memory.h"
 #include "content/public/browser/browser_message_filter.h"
 
+namespace base {
+class SharedMemory;
+}  // namespace base
+
+namespace net {
+class URLRequestContextGetter;
+}  // namespace net
+
+class RenderProcessHost;
+
 // WebRtcLoggingHandlerHost handles operations regarding the WebRTC logging:
-// opening and closing shared memory buffer that the handler in the renderer
-// process writes to.
+// - Opens a shared memory buffer that the handler in the render process
+//   writes to.
+// - Detects when channel, i.e. renderer, is going away and triggers uploading
+//   the log.
 class WebRtcLoggingHandlerHost : public content::BrowserMessageFilter {
  public:
   WebRtcLoggingHandlerHost();
 
  private:
+  friend class content::BrowserThread;
+  friend class base::DeleteHelper<WebRtcLoggingHandlerHost>;
+
+  virtual ~WebRtcLoggingHandlerHost();
+
   // BrowserMessageFilter implementation.
   virtual void OnChannelClosing() OVERRIDE;
   virtual void OnDestruct() const OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& message,
                                  bool* message_was_ok) OVERRIDE;
 
-  friend class content::BrowserThread;
-  friend class base::DeleteHelper<WebRtcLoggingHandlerHost>;
-
-  virtual ~WebRtcLoggingHandlerHost();
-
   void OnOpenLog(const std::string& app_session_id, const std::string& app_url);
 
-  base::SharedMemory shared_memory_;
+  void OpenLogIfAllowed();
+  void DoOpenLog();
+
+  void UploadLog();
+
+  scoped_refptr<net::URLRequestContextGetter> system_request_context_;
+  scoped_ptr<base::SharedMemory> shared_memory_;
   std::string app_session_id_;
   std::string app_url_;
 
   DISALLOW_COPY_AND_ASSIGN(WebRtcLoggingHandlerHost);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_WEBRTC_LOGGING_HANDLER_HOST_H_