Remove calls to deprecated MessageLoop methods in chrome.

chrome/browser/chromeos/policy/device_quirks_policy_browsertest.cc

 // Copyright 2016 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 "base/files/file_util.h"
 #include "base/macros.h"
-#include "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
 #include "chrome/browser/chromeos/policy/device_policy_cros_browser_test.h"
 #include "chrome/browser/chromeos/policy/proto/chrome_device_policy.pb.h"
 #include "chrome/browser/chromeos/settings/cros_settings.h"
 #include "components/quirks/quirks_manager.h"
 #include "content/public/test/test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace chromeos {
 
 const int64_t kProductId = 0x0000aaaa;
@@ skipping 23 matching lines @@
 
     // Create fake icc file.
     path = path.Append(quirks::IdToFileName(kProductId));
     int bytes_written =
         base::WriteFile(path, kFakeIccData, sizeof(kFakeIccData));
     ASSERT_EQ(sizeof(kFakeIccData), static_cast<size_t>(bytes_written));
   }
 
  protected:
   void RefreshPolicyAndWaitDeviceSettingsUpdated() {
+    base::RunLoop run_loop;
     std::unique_ptr<CrosSettings::ObserverSubscription> observer =
         CrosSettings::Get()->AddSettingsObserver(
-            kDeviceQuirksDownloadEnabled,
-            base::MessageLoop::current()->QuitWhenIdleClosure());
+            kDeviceQuirksDownloadEnabled, run_loop.QuitWhenIdleClosure());
 
     RefreshDevicePolicy();
-    base::MessageLoop::current()->Run();
+    run_loop.Run();
   }
 
   // Query QuirksManager for icc file, then run msg loop to wait for callback.
   // This won't actually run a Quirks client: if Quirks is enabled, it will
   // return the icc file in our fake downloads directory; if disabled, it will
   // return before looking there.
   bool TestQuirksEnabled() {
     base::RunLoop run_loop;
     end_message_loop_ = run_loop.QuitClosure();
     icc_path_.clear();
@@ skipping 64 matching lines @@
   quirks_download_enabled = true;
   EXPECT_TRUE(CrosSettings::Get()->GetBoolean(kDeviceQuirksDownloadEnabled,
                                               &quirks_download_enabled));
   EXPECT_FALSE(quirks_download_enabled);
 
   // With policy disabled, Quirks should abort and not find the fake icc file.
   EXPECT_FALSE(TestQuirksEnabled());
 }
 
 }  // namespace chromeos