Cleanup the UseSharedProxies preference.

chrome/browser/profiles/profile_impl.cc

 // 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.
 
 #include "chrome/browser/profiles/profile_impl.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
@@ skipping 1045 matching lines @@
 
 void ProfileImpl::InitChromeOSPreferences() {
   chromeos_preferences_.reset(new chromeos::Preferences());
   chromeos_preferences_->Init(PrefServiceSyncable::FromProfile(this));
 }
 #endif  // defined(OS_CHROMEOS)
 
 PrefProxyConfigTracker* ProfileImpl::GetProxyConfigTracker() {
   if (!pref_proxy_config_tracker_) {
     pref_proxy_config_tracker_.reset(
-        ProxyServiceFactory::CreatePrefProxyConfigTracker(GetPrefs()));
+        ProxyServiceFactory::CreatePrefProxyConfigTracker(this));
   }
   return pref_proxy_config_tracker_.get();
 }
 
 chrome_browser_net::Predictor* ProfileImpl::GetNetworkPredictor() {
   return predictor_;
 }
 
 void ProfileImpl::ClearNetworkingHistorySince(base::Time time,
                                               const base::Closure& completion) {
@@ skipping 69 matching lines @@
                                      base::FilePath* cache_path,
                                      int* max_size) {
   DCHECK(cache_path);
   DCHECK(max_size);
   base::FilePath path(prefs_->GetFilePath(prefs::kDiskCacheDir));
   if (!path.empty())
     *cache_path = path;
   *max_size = is_media_context ? prefs_->GetInteger(prefs::kMediaCacheSize) :
                                  prefs_->GetInteger(prefs::kDiskCacheSize);
 }