Remove PrerenderManager.enabled_ and related members.

chrome/browser/prerender/prerender_manager.cc

Index: chrome/browser/prerender/prerender_manager.cc
diff --git a/chrome/browser/prerender/prerender_manager.cc b/chrome/browser/prerender/prerender_manager.cc
index 3627820ad4329d80faf983d13e4a6647300e7aeb..b6981df749e76d897e3a9ce49f3b8e275ae1d6f5 100644
--- a/chrome/browser/prerender/prerender_manager.cc
+++ b/chrome/browser/prerender/prerender_manager.cc
@@ -238,8 +238,7 @@ struct PrerenderManager::NavigationRecord {
 
 PrerenderManager::PrerenderManager(Profile* profile,
                                    PrerenderTracker* prerender_tracker)
-    : enabled_(true),
-      profile_(profile),
+    : profile_(profile),
       prerender_tracker_(prerender_tracker),
       prerender_contents_factory_(PrerenderContents::CreateFactory()),
       last_prerender_start_time_(GetCurrentTimeTicks() -
@@ -741,11 +740,6 @@ void PrerenderManager::RecordPerceivedPageLoadTime(
   }
 }
 
-void PrerenderManager::set_enabled(bool enabled) {
-  DCHECK(CalledOnValidThread());
-  enabled_ = enabled;
-}
-
 // static
 PrerenderManager::PrerenderManagerMode PrerenderManager::GetMode() {
   return mode_;
@@ -933,7 +927,7 @@ base::DictionaryValue* PrerenderManager::GetAsValue() const {
   base::DictionaryValue* dict_value = new base::DictionaryValue();
   dict_value->Set("history", prerender_history_->GetEntriesAsValue());
   dict_value->Set("active", GetActivePrerendersAsValue());
-  dict_value->SetBoolean("enabled", enabled_);
+  dict_value->SetBoolean("enabled", IsEnabled());
   dict_value->SetBoolean("omnibox_enabled", IsOmniboxEnabled(profile_));
   // If prerender is disabled via a flag this method is not even called.
   std::string enabled_note;
@@ -1861,8 +1855,6 @@ void PrerenderManager::RecordNetworkBytes(Origin origin,
 bool PrerenderManager::IsEnabled() const {
   DCHECK(CalledOnValidThread());
 
-  if (!enabled_)
-    return false;
   return chrome_browser_net::CanPrefetchAndPrerenderUI(profile_->GetPrefs());
 }