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

sync/internal_api/js_sync_encryption_handler_observer_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 "sync/internal_api/js_sync_encryption_handler_observer.h"
 
 #include "base/basictypes.h"
 #include "base/location.h"
-#include "base/message_loop.h"
+#include "base/message_loop/message_loop.h"
 #include "base/values.h"
 #include "sync/internal_api/public/base/model_type.h"
 #include "sync/internal_api/public/util/sync_string_conversions.h"
 #include "sync/internal_api/public/util/weak_handle.h"
 #include "sync/js/js_event_details.h"
 #include "sync/js/js_test_util.h"
+#include "sync/test/fake_encryptor.h"
 #include "sync/util/cryptographer.h"
 #include "sync/util/time.h"
-#include "sync/test/fake_encryptor.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace syncer {
 namespace {
 
 using ::testing::InSequence;
 using ::testing::StrictMock;
 
 class JsSyncEncryptionHandlerObserverTest : public testing::Test {
  protected:
@@ skipping 135 matching lines @@
               HandleJsEvent("onPassphraseTypeChanged",
                             HasDetailsAsDictionary(passphrase_type_details)));
 
   js_sync_encryption_handler_observer_.OnPassphraseTypeChanged(
       IMPLICIT_PASSPHRASE, ProtoTimeToTime(10));
   PumpLoop();
 }
 
 }  // namespace
 }  // namespace syncer