Use base::MessageLoop in more files.

sync/engine/sync_scheduler_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 "base/bind.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop.h"
 #include "base/test/test_timeouts.h"
@@ skipping 1275 matching lines @@
   scheduler()->ScheduleLocalNudge(zero(), ModelTypeSet(BOOKMARKS), FROM_HERE);
 
   PumpLoop();  // Run the nudge, that will fail and schedule a quick retry.
   ASSERT_TRUE(scheduler()->IsBackingOff());
 
   // Before we run the scheduled canary, trigger a server connection change.
   scheduler()->OnConnectionStatusChange();
   connection()->SetServerReachable();
   connection()->UpdateConnectionStatus();
   scheduler()->ScheduleLocalNudge(zero(), ModelTypeSet(BOOKMARKS), FROM_HERE);
-  MessageLoop::current()->RunUntilIdle();
+  base::MessageLoop::current()->RunUntilIdle();
 }
 
 // Tests that we don't crash trying to run two canaries at once if we receive
 // extra connection status change notifications.  See crbug.com/190085.
 TEST_F(SyncSchedulerTest, DoubleCanaryInConfigure) {
   EXPECT_CALL(*syncer(), SyncShare(_, DOWNLOAD_UPDATES, APPLY_UPDATES))
       .WillRepeatedly(DoAll(
               Invoke(sessions::test_util::SimulateConnectionFailure),
               Return(true)));
   StartSyncScheduler(SyncScheduler::CONFIGURATION_MODE);
   connection()->SetServerNotReachable();
   connection()->UpdateConnectionStatus();
 
   ModelTypeSet model_types(BOOKMARKS);
   CallbackCounter counter;
   ConfigurationParams params(
       GetUpdatesCallerInfo::RECONFIGURATION,
       model_types,
       TypesToRoutingInfo(model_types),
       base::Bind(&CallbackCounter::Callback, base::Unretained(&counter)));
   scheduler()->ScheduleConfiguration(params);
 
   scheduler()->OnConnectionStatusChange();
   scheduler()->OnConnectionStatusChange();
 
   PumpLoop();  // Run the nudge, that will fail and schedule a quick retry.
 }
 
 }  // namespace syncer