Add a way to send the resource percentage signal to the RC.

chrome/browser/offline_pages/background_loader_offliner.h

 // 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.
 
 #ifndef CHROME_BROWSER_OFFLINE_PAGES_BACKGROUND_LOADER_OFFLINER_H_
 #define CHROME_BROWSER_OFFLINE_PAGES_BACKGROUND_LOADER_OFFLINER_H_
 
 #include <memory>
 
 #include "base/android/application_status_listener.h"
@@ skipping 28 matching lines @@
 
   static BackgroundLoaderOffliner* FromWebContents(
       content::WebContents* contents);
 
   // Offliner implementation.
   bool LoadAndSave(const SavePageRequest& request,
                    const CompletionCallback& completion_callback,
                    const ProgressCallback& progress_callback) override;
   bool Cancel(const CancelCallback& callback) override;
   bool HandleTimeout(int64_t request_id) override;
+  void ObserveResourceTracking(const Offliner::ResourceDataType type,
+                               int64_t started_count,
+                               int64_t completed_count) override;
 
   // WebContentsObserver implementation.
   void DocumentAvailableInMainFrame() override;
   void DocumentOnLoadCompletedInMainFrame() override;
   void RenderProcessGone(base::TerminationStatus status) override;
   void WebContentsDestroyed() override;
   void DidFinishNavigation(
       content::NavigationHandle* navigation_handle) override;
 
   // SnapshotController::Client implementation.
@@ skipping 75 matching lines @@
 
   // Callback for cancel.
   CancelCallback cancel_callback_;
 
   base::WeakPtrFactory<BackgroundLoaderOffliner> weak_ptr_factory_;
   DISALLOW_COPY_AND_ASSIGN(BackgroundLoaderOffliner);
 };
 
 }  // namespace offline_pages
 #endif  // CHROME_BROWSER_OFFLINE_PAGES_BACKGROUND_LOADER_OFFLINER_H_