Move destruction of WebRtcLogUploader to post threads teardown.

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/memory/shared_memory.h"
 #include "content/public/browser/browser_message_filter.h"
@@ skipping 111 matching lines @@
   // Gets the log directory path for |profile_| and ensure it exists. Must be
   // called on the FILE thread.
   base::FilePath GetLogDirectoryAndEnsureExists();
 
   void TriggerUploadLog(const base::FilePath& log_directory);
 
   void FireGenericDoneCallback(GenericDoneCallback* callback,
                                bool success,
                                const std::string& error_message);
 
-  scoped_refptr<net::URLRequestContextGetter> system_request_context_;
-
   scoped_ptr<unsigned char[]> log_buffer_;
   scoped_ptr<PartialCircularBuffer> circular_buffer_;
 
   // The profile associated with our renderer process.
   Profile* profile_;
 
   // These are only accessed on the IO thread, except when in STARTING state. In
   // this state we are protected since entering any function that alters the
   // state is not allowed.
   MetaDataMap meta_data_;
@@ skipping 14 matching lines @@
 
   // This is the handle to be passed to the render process. It's stored so that
   // it doesn't have to be passed on when posting messages between threads.
   // It's only accessed on the IO thread.
   base::SharedMemoryHandle foreign_memory_handle_;
 
   DISALLOW_COPY_AND_ASSIGN(WebRtcLoggingHandlerHost);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_WEBRTC_LOGGING_HANDLER_HOST_H_