Remove calls to deprecated MessageLoop methods in chrome.

chrome/browser/extensions/extension_prefs_unittest.cc

 // Copyright (c) 2012 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/extensions/extension_prefs_unittest.h"
 
 #include "base/files/scoped_temp_dir.h"
 #include "base/path_service.h"
+#include "base/run_loop.h"
 #include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "base/time/time.h"
 #include "base/values.h"
 #include "chrome/common/chrome_paths.h"
 #include "components/pref_registry/pref_registry_syncable.h"
 #include "components/prefs/mock_pref_change_callback.h"
 #include "components/prefs/pref_change_registrar.h"
 #include "components/prefs/scoped_user_pref_update.h"
@@ skipping 40 matching lines @@
 
 void ExtensionPrefsTest::TearDown() {
   Verify();
 
   // Reset ExtensionPrefs, and re-verify.
   prefs_.ResetPrefRegistry();
   RegisterPreferences(prefs_.pref_registry().get());
   prefs_.RecreateExtensionPrefs();
   Verify();
   prefs_.pref_service()->CommitPendingWrite();
-  message_loop_.RunUntilIdle();
+  base::RunLoop().RunUntilIdle();
 }
 
 // Tests the LastPingDay/SetLastPingDay functions.
 class ExtensionPrefsLastPingDay : public ExtensionPrefsTest {
  public:
   ExtensionPrefsLastPingDay()
       : extension_time_(Time::Now() - TimeDelta::FromHours(4)),
         blacklist_time_(Time::Now() - TimeDelta::FromHours(2)) {}
 
   void Initialize() override {
@@ skipping 909 matching lines @@
 
  private:
   std::unique_ptr<const PermissionSet> active_perms_;
   scoped_refptr<Extension> component_extension_;
   scoped_refptr<Extension> no_component_extension_;
 };
 TEST_F(ExtensionPrefsComponentExtension, ExtensionPrefsComponentExtension) {
 }
 
 }  // namespace extensions