Remove PrerenderManager.enabled_ and related members.

chrome/browser/prerender/prerender_manager.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_PRERENDER_PRERENDER_MANAGER_H_
 #define CHROME_BROWSER_PRERENDER_PRERENDER_MANAGER_H_
 
 #include <list>
 #include <map>
 #include <string>
@@ skipping 176 matching lines @@
   // This must be called on the UI thread.
   // |fraction_plt_elapsed_at_swap_in| must either be in [0.0, 1.0], or a value
   // outside that range indicating that it doesn't apply.
   void RecordPerceivedPageLoadTime(
       Origin origin,
       NavigationType navigation_type,
       base::TimeDelta perceived_page_load_time,
       double fraction_plt_elapsed_at_swap_in,
       const GURL& url);
 
-  // Set whether prerendering is currently enabled for this manager.
-  // Must be called on the UI thread.
-  // If |enabled| is false, existing prerendered pages will still persist until
-  // they time out, but new ones will not be generated.
-  void set_enabled(bool enabled);
-
   static PrerenderManagerMode GetMode();
   static void SetMode(PrerenderManagerMode mode);
   static const char* GetModeString();
   static bool IsPrerenderingPossible();
   static bool ActuallyPrerendering();
   static bool IsControlGroup(uint8 experiment_id);
   static bool IsNoUseGroup();
 
   // Query the list of current prerender pages to see if the given web contents
   // is prerendering a page. The optional parameter |origin| is an output
@@ skipping 457 matching lines @@
   // if a swap-in was not possible.  If |should_replace_current_entry| is true,
   // the current history entry in |web_contents| is replaced.
   content::WebContents* SwapInternal(const GURL& url,
                                      content::WebContents* web_contents,
                                      PrerenderData* prerender_data,
                                      bool should_replace_current_entry);
 
   // The configuration.
   Config config_;
 
-  // Specifies whether prerendering is currently enabled for this
-  // manager. The value can change dynamically during the lifetime
-  // of the PrerenderManager.
-  bool enabled_;
-
   // The profile that owns this PrerenderManager.
   Profile* profile_;
 
   PrerenderTracker* prerender_tracker_;
 
   // All running prerenders. Sorted by expiry time, in ascending order.
   ScopedVector<PrerenderData> active_prerenders_;
 
   // Prerenders awaiting deletion.
   ScopedVector<PrerenderData> to_delete_prerenders_;
@@ skipping 58 matching lines @@
   bool cookie_store_loaded_;
 
   base::Closure on_cookie_store_loaded_cb_for_testing_;
 
   DISALLOW_COPY_AND_ASSIGN(PrerenderManager);
 };
 
 }  // namespace prerender
 
 #endif  // CHROME_BROWSER_PRERENDER_PRERENDER_MANAGER_H_