Delay delay launch of local discovery notification service.

chrome/browser/local_discovery/privet_notifications.cc

 // Copyright 2013 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/local_discovery/privet_notifications.h"
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
+#include "base/rand_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/local_discovery/privet_device_lister_impl.h"
 #include "chrome/browser/notifications/notification.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/host_desktop.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/webui/local_discovery/local_discovery_ui_handler.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/page_transition_types.h"
 #include "grit/generated_resources.h"
 #include "grit/theme_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/message_center/notifier_settings.h"
 
 namespace local_discovery {
 
 namespace {
 const int kTenMinutesInSeconds = 600;
 const char kPrivetInfoKeyUptime[] = "uptime";
 const char kPrivetNotificationIDPrefix[] = "privet_notification:";
 const char kPrivetNotificationOriginUrl[] = "chrome://devices";
+const int kStartDelaySeconds = 30;
 }
 
 PrivetNotificationsListener::PrivetNotificationsListener(
     scoped_ptr<PrivetHTTPAsynchronousFactory> privet_http_factory,
     Delegate* delegate) : delegate_(delegate) {
   privet_http_factory_.swap(privet_http_factory);
 }
 
 PrivetNotificationsListener::~PrivetNotificationsListener() {
 }
@@ skipping 98 matching lines @@
 }
 
 PrivetNotificationsListener::DeviceContext::~DeviceContext() {
 }
 
 PrivetNotificationService::PrivetNotificationService(
     content::BrowserContext* profile,
     NotificationUIManager* notification_manager)
     : profile_(profile),
       notification_manager_(notification_manager) {
-  base::MessageLoop::current()->PostTask(
+  base::MessageLoop::current()->PostDelayedTask(
       FROM_HERE,
-      base::Bind(&PrivetNotificationService::Start, AsWeakPtr()));
+      base::Bind(&PrivetNotificationService::Start, AsWeakPtr()),
+      base::TimeDelta::FromSeconds(kStartDelaySeconds +
+                                   base::RandInt(0, kStartDelaySeconds/4)));
 }
 
 PrivetNotificationService::~PrivetNotificationService() {
   ServiceDiscoveryHostClientFactory::ReleaseClient();
 }
 
 void PrivetNotificationService::DeviceChanged(
     bool added,
     const std::string& name,
     const DeviceDescription& description) {
@@ skipping 111 matching lines @@
   contents->GetController().LoadURL(url,
                                     content::Referrer(),
                                     content::PAGE_TRANSITION_AUTO_TOPLEVEL,
                                     "");
 
   browser->tab_strip_model()->AppendWebContents(contents.release(), true);
 }
 
 
 }  // namespace local_discovery