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

chrome/browser/android/offline_pages/prerendering_loader.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_ANDROID_OFFLINE_PAGES_PRERENDERING_LOADER_H_
 #define CHROME_BROWSER_ANDROID_OFFLINE_PAGES_PRERENDERING_LOADER_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 67 matching lines @@
   void OnPrerenderDomContentLoaded() override;
   void OnPrerenderStop() override;
   void OnPrerenderNetworkBytesChanged(int64_t bytes) override;
 
   // SnapshotController::Client implementation:
   void StartSnapshot() override;
 
   // Returns true if the lowbar of snapshotting a page is met.
   virtual bool IsLowbarMet();
 
+  void ObserveResourceTracking(const Offliner::ResourceDataType type,
+                               int64_t started_count,
+                               int64_t completed_count);
+
   // Returns a JSON dictionary value for analysis of loading progress.
   const base::DictionaryValue& GetLoadingSignalData() { return signal_data_; }
 
  private:
   // State of the loader (only one request may be active at a time).
   enum class State {
     IDLE,     // No active load request.
     PENDING,  // Load request is pending the start of prerendering.
     LOADING,  // Loading in progress.
     LOADED,   // Loaded and now waiting for requestor to StopLoading().
@@ skipping 49 matching lines @@
 
   // Time in ticks of when we start loading the page.
   base::TimeTicks load_start_time_;
 
   DISALLOW_COPY_AND_ASSIGN(PrerenderingLoader);
 };
 
 }  // namespace offline_pages
 
 #endif  // CHROME_BROWSER_ANDROID_OFFLINE_PAGES_PRERENDERING_LOADER_H_