Remove PrerenderManager.enabled_ and related members.

chrome/browser/net/net_pref_observer.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_NET_NET_PREF_OBSERVER_H_
 #define CHROME_BROWSER_NET_NET_PREF_OBSERVER_H_
 
 #include "base/basictypes.h"
 #include "base/prefs/pref_member.h"
 
 class PrefService;
 
-namespace chrome_browser_net {
-class Predictor;
-}
-
-namespace prerender {
-class PrerenderManager;
-}
-
 namespace user_prefs {
 class PrefRegistrySyncable;
 }
 
 // Monitors network-related preferences for changes and applies them.
 // The supplied PrefService must outlive this NetPrefObserver.
 // Must be used only on the UI thread.
 class NetPrefObserver {
  public:
   // |prefs| must be non-NULL and |*prefs| must outlive this.
-  // |prerender_manager| may be NULL. If not, |*prerender_manager| must
-  // outlive this.
-  NetPrefObserver(PrefService* prefs,
-                  prerender::PrerenderManager* prerender_manager,
-                  chrome_browser_net::Predictor* predictor);
+  explicit NetPrefObserver(PrefService* prefs);
   virtual ~NetPrefObserver();
 
   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
 
  private:
   void ApplySettings();
 
-  BooleanPrefMember network_prediction_enabled_;
   BooleanPrefMember spdy_disabled_;
-  prerender::PrerenderManager* prerender_manager_;
-  chrome_browser_net::Predictor* predictor_;
 
   DISALLOW_COPY_AND_ASSIGN(NetPrefObserver);
 };
 
 #endif  // CHROME_BROWSER_NET_NET_PREF_OBSERVER_H_