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

chrome/browser/background/background_contents_service.cc

Index: chrome/browser/background/background_contents_service.cc
diff --git a/chrome/browser/background/background_contents_service.cc b/chrome/browser/background/background_contents_service.cc
index 406411bdc348518fbf0cd879e50a01c64c37022d..de19f74c79a086465f89f4d169c7cf14dc0906ae 100644
--- a/chrome/browser/background/background_contents_service.cc
+++ b/chrome/browser/background/background_contents_service.cc
@@ -9,12 +9,15 @@
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
+#include "base/location.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/prefs/pref_service.h"
 #include "base/prefs/scoped_user_pref_update.h"
+#include "base/single_thread_task_runner.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
+#include "base/thread_task_runner_handle.h"
 #include "base/time/time.h"
 #include "base/values.h"
 #include "chrome/browser/background/background_contents_service_factory.h"
@@ -87,11 +90,9 @@ void CloseBalloon(const std::string& balloon_id, ProfileID profile_id) {
 void ScheduleCloseBalloon(const std::string& extension_id, Profile* profile) {
   if (g_disable_close_balloon_for_testing)
     return;
-  base::MessageLoop::current()->PostTask(
-      FROM_HERE,
-      base::Bind(&CloseBalloon,
-                 kNotificationPrefix + extension_id,
-                 NotificationUIManager::GetProfileID(profile)));
+  base::ThreadTaskRunnerHandle::Get()->PostTask(
+      FROM_HERE, base::Bind(&CloseBalloon, kNotificationPrefix + extension_id,
+                            NotificationUIManager::GetProfileID(profile)));
 }
 
 // Delegate for the app/extension crash notification balloon. Restarts the