Move ProxyConfigService construction onto the IO thread.

chrome/browser/profiles/profile_io_data.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 CHROME_BROWSER_PROFILES_PROFILE_IO_DATA_H_
 #define CHROME_BROWSER_PROFILES_PROFILE_IO_DATA_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 188 matching lines @@
     DesktopNotificationService* notification_service;
 #endif
 
     // This pointer exists only as a means of conveying a url interceptor
     // pointer from the protocol handler registry on the UI thread to the
     // the URLRequestJobFactory on the IO thread. The consumer MUST take
     // ownership of the object by calling release() on this pointer.
     scoped_ptr<net::URLRequestJobFactory::Interceptor>
         protocol_handler_interceptor;
 
-    // We need to initialize the ProxyConfigService from the UI thread
-    // because on linux it relies on initializing things through gconf,
-    // and needs to be on the main thread.
-    scoped_ptr<net::ProxyConfigService> proxy_config_service;
+    // Used on the UI thread to return a pointer to the Profile.
+    base::Callback<Profile*(void)> profile_getter;
     // The profile this struct was populated from. It's passed as a void* to
     // ensure it's not accidently used on the IO thread. Before using it on the
     // UI thread, call ProfileManager::IsValidProfile to ensure it's alive.
     void* profile;
   };
 
   explicit ProfileIOData(bool is_incognito);
 
   static std::string GetSSLSessionCacheShard();
 
@@ skipping 206 matching lines @@
 
   // TODO(jhawkins): Remove once crbug.com/102004 is fixed.
   bool initialized_on_UI_thread_;
 
   bool is_incognito_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileIOData);
 };
 
 #endif  // CHROME_BROWSER_PROFILES_PROFILE_IO_DATA_H_