Use a direct include of the message_loop header in ppapi/, printing/, rlz/, sync/.

sync/internal_api/sync_encryption_handler_impl_unittest.cc

 // Copyright 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 "sync/internal_api/sync_encryption_handler_impl.h"
 
 #include <string>
 
 #include "base/base64.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/message_loop.h"
+#include "base/message_loop/message_loop.h"
 #include "base/tracked_objects.h"
 #include "sync/internal_api/public/base/model_type_test_util.h"
 #include "sync/internal_api/public/read_node.h"
 #include "sync/internal_api/public/read_transaction.h"
+#include "sync/internal_api/public/test/test_user_share.h"
 #include "sync/internal_api/public/write_node.h"
 #include "sync/internal_api/public/write_transaction.h"
-#include "sync/internal_api/public/test/test_user_share.h"
 #include "sync/protocol/nigori_specifics.pb.h"
 #include "sync/protocol/sync.pb.h"
 #include "sync/syncable/entry.h"
 #include "sync/syncable/mutable_entry.h"
 #include "sync/syncable/syncable_write_transaction.h"
 #include "sync/test/engine/test_id_factory.h"
 #include "sync/test/fake_encryptor.h"
 #include "sync/util/cryptographer.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 2243 matching lines @@
     encryption_handler()->SetKeystoreKeys(keys,
                                           trans.GetWrappedTrans());
   }
   PumpLoop();
   Mock::VerifyAndClearExpectations(observer());
 
   VerifyMigratedNigoriWithTimestamp(1, CUSTOM_PASSPHRASE, kCustomPass);
 }
 
 }  // namespace syncer