Fix early prerender cancellation not working with PlzNavigate.

chrome/browser/prerender/prerender_contents.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_CONTENTS_H_
 #define CHROME_BROWSER_PRERENDER_PRERENDER_CONTENTS_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 217 matching lines @@
 
   // Called when a PrerenderResourceThrottle defers a request. If the prerender
   // is used it'll be resumed on the IO thread, otherwise they will get
   // cancelled automatically if prerendering is cancelled.
   void AddResourceThrottle(
       const base::WeakPtr<PrerenderResourceThrottle>& throttle);
 
   // Increments the number of bytes fetched over the network for this prerender.
   void AddNetworkBytes(int64_t bytes);
 
+  bool prerendering_has_been_cancelled() const {
+    return prerendering_has_been_cancelled_;
+  }
+
  protected:
   PrerenderContents(PrerenderManager* prerender_manager,
                     Profile* profile,
                     const GURL& url,
                     const content::Referrer& referrer,
                     Origin origin);
 
   // Set the final status for how the PrerenderContents was used. This
   // should only be called once, and should be called before the prerender
   // contents are destroyed.
   void SetFinalStatus(FinalStatus final_status);
 
   // These call out to methods on our Observers, using our observer_list_. Note
   // that NotifyPrerenderStop() also clears the observer list.
   void NotifyPrerenderStart();
   void NotifyPrerenderStopLoading();
   void NotifyPrerenderDomContentLoaded();
   void NotifyPrerenderStop();
 
   // Called whenever a RenderViewHost is created for prerendering.  Only called
   // once the RenderViewHost has a RenderView and RenderWidgetHostView.
   virtual void OnRenderViewHostCreated(
       content::RenderViewHost* new_render_view_host);
 
   content::NotificationRegistrar& notification_registrar() {
     return notification_registrar_;
   }
 
-  bool prerendering_has_been_cancelled() const {
-    return prerendering_has_been_cancelled_;
-  }
-
   content::WebContents* CreateWebContents(
       content::SessionStorageNamespace* session_storage_namespace);
 
   PrerenderMode prerender_mode_;
   bool prerendering_has_started_;
 
   // Time at which we started to load the URL.  This is used to compute
   // the time elapsed from initiating a prerender until the time the
   // (potentially only partially) prerendered page is shown to the user.
   base::TimeTicks load_start_time_;
@@ skipping 85 matching lines @@
   // A running tally of the number of bytes this prerender has caused to be
   // transferred over the network for resources.  Updated with AddNetworkBytes.
   int64_t network_bytes_;
 
   DISALLOW_COPY_AND_ASSIGN(PrerenderContents);
 };
 
 }  // namespace prerender
 
 #endif  // CHROME_BROWSER_PRERENDER_PRERENDER_CONTENTS_H_