Remove PrerenderManager.enabled_ and related members.

chrome/browser/net/net_pref_observer.h

Index: chrome/browser/net/net_pref_observer.h
diff --git a/chrome/browser/net/net_pref_observer.h b/chrome/browser/net/net_pref_observer.h
index ba938b0c92ca80a6d2a5e09bf68ad6ec9ba2ecf1..ff738d6a4eecef08ddf42f60b8016ea31ff78a2f 100644
--- a/chrome/browser/net/net_pref_observer.h
+++ b/chrome/browser/net/net_pref_observer.h
@@ -10,14 +10,6 @@
 
 class PrefService;
 
-namespace chrome_browser_net {
-class Predictor;
-}
-
-namespace prerender {
-class PrerenderManager;
-}
-
 namespace user_prefs {
 class PrefRegistrySyncable;
 }
@@ -28,11 +20,7 @@ class PrefRegistrySyncable;
 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);
@@ -40,10 +28,7 @@ class NetPrefObserver {
  private:
   void ApplySettings();
 
-  BooleanPrefMember network_prediction_enabled_;
   BooleanPrefMember spdy_disabled_;
-  prerender::PrerenderManager* prerender_manager_;
-  chrome_browser_net::Predictor* predictor_;
 
   DISALLOW_COPY_AND_ASSIGN(NetPrefObserver);
 };