[GCM] Fetching OAuth2 tokens periodically in account tracker

components/gcm_driver/gcm_driver_desktop.cc

 // Copyright 2014 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 "components/gcm_driver/gcm_driver_desktop.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 345 matching lines @@
           new GCMChannelStatusSyncer(this,
                                      prefs,
                                      channel_status_request_url,
                                      user_agent,
                                      request_context)),
       signed_in_(false),
       gcm_started_(false),
       gcm_enabled_(true),
       connected_(false),
       account_mapper_(new GCMAccountMapper(this)),
+      // Setting to max, to make sure it does not prompt for token reporting
+      // Before reading a reasonable value from the DB, which might be never,
+      // in which case the fetching will be triggered.
+      last_token_fetch_time_(base::Time::Max()),
       ui_thread_(ui_thread),
       io_thread_(io_thread),
       weak_ptr_factory_(this) {
   gcm_enabled_ = gcm_channel_status_syncer_->gcm_enabled();
 
   // Create and initialize the GCMClient. Note that this does not initiate the
   // GCM check-in.
   io_worker_.reset(new IOWorker(ui_thread, io_thread));
   io_thread_->PostTask(
       FROM_HERE,
@@ skipping 389 matching lines @@
     return;
 
   GetAppHandler(app_id)->OnSendAcknowledged(app_id, message_id);
 }
 
 void GCMDriverDesktop::GCMClientReady(
     const std::vector<AccountMapping>& account_mappings,
     const base::Time& last_token_fetch_time) {
   DCHECK(ui_thread_->RunsTasksOnCurrentThread());
 
+  last_token_fetch_time_ = last_token_fetch_time;
+
   GCMDriver::AddAppHandler(kGCMAccountMapperAppId, account_mapper_.get());
   account_mapper_->Initialize(account_mappings);
-  last_token_fetch_time_ = last_token_fetch_time;
 
   delayed_task_controller_->SetReady();
 }
 
 void GCMDriverDesktop::OnConnected(const net::IPEndPoint& ip_endpoint) {
   DCHECK(ui_thread_->RunsTasksOnCurrentThread());
 
   connected_ = true;
 
   // Drop the event if the service has been stopped.
@@ skipping 24 matching lines @@
 
   // Normally request_gcm_statistics_callback_ would not be null.
   if (!request_gcm_statistics_callback_.is_null())
     request_gcm_statistics_callback_.Run(stats);
   else
     LOG(WARNING) << "request_gcm_statistics_callback_ is NULL.";
 }
 
 }  // namespace gcm