chrome/browser: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

chrome/browser/notifications/extension_welcome_notification.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 "chrome/browser/notifications/extension_welcome_notification.h"
 
 #include "base/guid.h"
 #include "base/lazy_instance.h"
-#include "base/message_loop/message_loop.h"
+#include "base/location.h"
 #include "base/prefs/pref_service.h"
+#include "base/single_thread_task_runner.h"
 #include "base/strings/utf_string_conversions.h"
+#include "base/thread_task_runner_handle.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/notifications/notification.h"
 #include "chrome/browser/prefs/pref_service_syncable.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser_navigator.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/grit/generated_resources.h"
 #include "components/pref_registry/pref_registry_syncable.h"
 #include "grit/theme_resources.h"
@@ skipping 91 matching lines @@
   DefaultDelegate() {}
 
   message_center::MessageCenter* GetMessageCenter() override {
     return g_browser_process->message_center();
   }
 
   base::Time GetCurrentTime() override { return base::Time::Now(); }
 
   void PostTask(const tracked_objects::Location& from_here,
                 const base::Closure& task) override {
-    base::MessageLoop::current()->PostTask(from_here, task);
+    base::ThreadTaskRunnerHandle::Get()->PostTask(from_here, task);
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DefaultDelegate);
 };
 
 }  // namespace
 
 ExtensionWelcomeNotification::ExtensionWelcomeNotification(
     Profile* const profile,
@@ skipping 212 matching lines @@
       prefs::kWelcomeNotificationExpirationTimestamp,
       (delegate_->GetCurrentTime() +
           base::TimeDelta::FromDays(kRequestedShowTimeDays)).ToInternalValue());
 }
 
 bool ExtensionWelcomeNotification::IsWelcomeNotificationExpired() const {
   const base::Time expiration_timestamp = GetExpirationTimestamp();
   return !expiration_timestamp.is_null() &&
          (expiration_timestamp <= delegate_->GetCurrentTime());
 }