[Offline Prefetch] Create a new JobScheduler task to wake up for net activity.

chrome/browser/ui/webui/offline/offline_internals_ui_message_handler.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/ui/webui/offline/offline_internals_ui_message_handler.h"
 
 #include <stdint.h>
 #include <stdlib.h>
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/guid.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/android/offline_pages/offline_page_model_factory.h"
+#include "chrome/browser/android/offline_pages/prefetch/prefetch_background_task.h"
 #include "chrome/browser/android/offline_pages/request_coordinator_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "components/offline_pages/core/client_namespace_constants.h"
 #include "content/public/browser/web_ui.h"
 #include "net/base/network_change_notifier.h"
 
 namespace offline_internals {
 
 OfflineInternalsUIMessageHandler::OfflineInternalsUIMessageHandler()
     : offline_page_model_(nullptr),
@@ skipping 192 matching lines @@
     const base::ListValue* args) {
   const base::Value* callback_id;
   CHECK(args->Get(0, &callback_id));
 
   ResolveJavascriptCallback(
       *callback_id,
       base::Value(net::NetworkChangeNotifier::IsOffline() ? "Offline"
                                                           : "Online"));
 }
 
+void OfflineInternalsUIMessageHandler::HandleScheduleNwake(

[tommycli, 2017/05/03 16:00:12]

Can these methods be the first method called from the page? If so, they should
have an AllowJavascript() call. Same with HandleSetRecordPageModel and
HandleGetNetworkStatus

[dewittj, 2017/05/03 21:34:10]

Done.

+    const base::ListValue* args) {
+  const base::Value* callback_id;
+  CHECK(args->Get(0, &callback_id));
+
+  offline_pages::PrefetchBackgroundTask::Schedule();
+
+  ResolveJavascriptCallback(*callback_id, base::Value("Scheduled."));

[tommycli, 2017/05/03 16:00:12]

I'm assuming this is an internal page and so there's no translations?

[dewittj, 2017/05/03 21:34:10]

Correct.

+}
+
+void OfflineInternalsUIMessageHandler::HandleCancelNwake(
+    const base::ListValue* args) {
+  const base::Value* callback_id;
+  CHECK(args->Get(0, &callback_id));
+
+  offline_pages::PrefetchBackgroundTask::Cancel();
+
+  ResolveJavascriptCallback(*callback_id, base::Value("Cancelled."));
+}
+
 void OfflineInternalsUIMessageHandler::HandleSetRecordRequestQueue(
     const base::ListValue* args) {
   bool should_record;
   CHECK(args->GetBoolean(0, &should_record));
   if (request_coordinator_)
     request_coordinator_->GetLogger()->SetIsLogging(should_record);
 }
 
 void OfflineInternalsUIMessageHandler::HandleGetLoggingState(
     const base::ListValue* args) {
@@ skipping 93 matching lines @@
       base::Bind(&OfflineInternalsUIMessageHandler::HandleGetLoggingState,
                  weak_ptr_factory_.GetWeakPtr()));
   web_ui()->RegisterMessageCallback(
       "addToRequestQueue",
       base::Bind(&OfflineInternalsUIMessageHandler::HandleAddToRequestQueue,
                  weak_ptr_factory_.GetWeakPtr()));
   web_ui()->RegisterMessageCallback(
       "getNetworkStatus",
       base::Bind(&OfflineInternalsUIMessageHandler::HandleGetNetworkStatus,
                  weak_ptr_factory_.GetWeakPtr()));
+  web_ui()->RegisterMessageCallback(
+      "scheduleNwake",
+      base::Bind(&OfflineInternalsUIMessageHandler::HandleScheduleNwake,
+                 weak_ptr_factory_.GetWeakPtr()));
+

[tommycli, 2017/05/03 16:00:12]

intentional extra newline?

[dewittj, 2017/05/03 21:34:10]

Done.

+  web_ui()->RegisterMessageCallback(
+      "cancelNwake",
+      base::Bind(&OfflineInternalsUIMessageHandler::HandleCancelNwake,
+                 weak_ptr_factory_.GetWeakPtr()));
 
   // Get the offline page model associated with this web ui.
   Profile* profile = Profile::FromWebUI(web_ui());
   offline_page_model_ =
       offline_pages::OfflinePageModelFactory::GetForBrowserContext(profile);
   request_coordinator_ =
       offline_pages::RequestCoordinatorFactory::GetForBrowserContext(profile);
 }
 
 }  // namespace offline_internals