Revert of PrerenderingLoader initial integration with PrerenderManager/PrerenderHandle

chrome/browser/android/offline_pages/prerendering_offliner.cc

 // Copyright 2016 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.
 
 #include "chrome/browser/android/offline_pages/prerendering_offliner.h"
 
 #include "base/bind.h"
 #include "components/offline_pages/background/save_page_request.h"
 #include "content/public/browser/browser_context.h"
 
 namespace offline_pages {
 
 PrerenderingOffliner::PrerenderingOffliner(
     content::BrowserContext* browser_context,
     const OfflinerPolicy* policy,
     OfflinePageModel* offline_page_model)
     : browser_context_(browser_context),
       offline_page_model_(offline_page_model),
       weak_ptr_factory_(this) {}
 
 PrerenderingOffliner::~PrerenderingOffliner() {}
 
-void PrerenderingOffliner::OnLoadPageDone(Offliner::RequestStatus load_status,
-                                          content::WebContents* contents) {
+void PrerenderingOffliner::OnLoadPageDone(
+    const Offliner::CompletionStatus load_status,
+    content::WebContents* contents) {
   // TODO(dougarnett): Implement save attempt and running CompletionCallback.
 }
 
 bool PrerenderingOffliner::LoadAndSave(const SavePageRequest& request,
                                        const CompletionCallback& callback) {
   if (!offline_page_model_->CanSavePage(request.url()))
     return false;
 
   // Kick off load page attempt.
   return GetOrCreateLoader()->LoadPage(
       request.url(), base::Bind(&PrerenderingOffliner::OnLoadPageDone,
                                 weak_ptr_factory_.GetWeakPtr()));
 }
 
 void PrerenderingOffliner::Cancel() {
   GetOrCreateLoader()->StopLoading();
 }
 
-void PrerenderingOffliner::SetLoaderForTesting(
-    std::unique_ptr<PrerenderingLoader> loader) {
-  DCHECK(!loader_);
-  loader_ = std::move(loader);
-}
-
 PrerenderingLoader* PrerenderingOffliner::GetOrCreateLoader() {
   if (!loader_) {
     loader_.reset(new PrerenderingLoader(browser_context_));
   }
   return loader_.get();
 }
 
+void PrerenderingOffliner::SetLoaderForTesting(
+    std::unique_ptr<PrerenderingLoader> loader) {
+  DCHECK(!loader_);
+  loader_ = std::move(loader);
+}
+
 }  // namespace offline_pages