[Offline Pages] Snapshotting on timeout of last retry.

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 "base/metrics/histogram_macros.h"
 #include "base/sys_info.h"
 #include "chrome/browser/android/offline_pages/offline_page_mhtml_archiver.h"
 #include "chrome/browser/android/offline_pages/offliner_helper.h"
 #include "chrome/browser/profiles/profile.h"
+#include "components/offline_pages/core/background/offliner_policy.h"
 #include "components/offline_pages/core/background/save_page_request.h"
 #include "components/offline_pages/core/client_namespace_constants.h"
 #include "components/offline_pages/core/offline_page_model.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/web_contents.h"
 
 namespace offline_pages {
 
 PrerenderingOffliner::PrerenderingOffliner(
     content::BrowserContext* browser_context,
     const OfflinerPolicy* policy,
     OfflinePageModel* offline_page_model)
     : browser_context_(browser_context),
+      policy_(policy),
       offline_page_model_(offline_page_model),
       pending_request_(nullptr),
       is_low_end_device_(base::SysInfo::IsLowEndDevice()),
       app_listener_(nullptr),
       weak_ptr_factory_(this) {}
 
 PrerenderingOffliner::~PrerenderingOffliner() {}
 
 void PrerenderingOffliner::OnLoadPageDone(
     const SavePageRequest& request,
@@ skipping 157 matching lines @@
 
 void PrerenderingOffliner::Cancel() {
   if (pending_request_) {
     pending_request_.reset(nullptr);
     app_listener_.reset(nullptr);
     GetOrCreateLoader()->StopLoading();
     // TODO(dougarnett): Consider ability to cancel SavePage request.
   }
 }
 
+bool PrerenderingOffliner::HandleTimeout(const SavePageRequest& request) {
+  if (pending_request_) {
+    DCHECK(request.request_id() == pending_request_->request_id());
+    if (GetOrCreateLoader()->IsLowbarMet() &&
+        (request.started_attempt_count() + 1 >= policy_->GetMaxStartedTries() ||
+         request.completed_attempt_count() + 1 >=
+             policy_->GetMaxCompletedTries())) {
+      GetOrCreateLoader()->StartSnapshot();
+      return true;
+    }
+  }
+  return false;
+}
+
 void PrerenderingOffliner::SetLoaderForTesting(
     std::unique_ptr<PrerenderingLoader> loader) {
   DCHECK(!loader_);
   loader_ = std::move(loader);
 }
 
 void PrerenderingOffliner::SetLowEndDeviceForTesting(bool is_low_end_device) {
   is_low_end_device_ = is_low_end_device;
 }
 
@@ skipping 25 matching lines @@
           base::android::APPLICATION_STATE_HAS_RUNNING_ACTIVITIES) {
     DVLOG(1) << "App became active, canceling current offlining request";
     SavePageRequest* request = pending_request_.get();
     Cancel();
     completion_callback_.Run(*request,
                              Offliner::RequestStatus::FOREGROUND_CANCELED);
   }
 }
 
 }  // namespace offline_pages