[Offline Pages] Snapshotting on timeout of last retry.

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 "base/callback.h"
@@ skipping 61 matching lines @@
 
   // PrerenderAdapter::Observer implementation:
   void OnPrerenderStopLoading() override;
   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();
+
  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().
   };
 
   // Handles some event/signal that the load request has succeeded or failed.
@@ skipping 25 matching lines @@
   // storage namespace for rendering. This will NOT have the loaded page.
   std::unique_ptr<content::WebContents> session_contents_;
 
   // Callback to call when the active load request completes, fails, or is
   // canceled.
   LoadPageCallback load_done_callback_;
 
   // Callback to call when we know more bytes have loaded from the network.
   ProgressCallback progress_callback_;
 
+  // True if the lowbar of snapshotting a page is met.
+  bool is_lowbar_met_;
+
   DISALLOW_COPY_AND_ASSIGN(PrerenderingLoader);
 };
 
 }  // namespace offline_pages
 
 #endif  // CHROME_BROWSER_ANDROID_OFFLINE_PAGES_PRERENDERING_LOADER_H_