diff --git a/ipc/chromium/src/base/condition_variable.h b/ipc/chromium/src/base/condition_variable.h
index f274c8eabe2d..4041fe8a6f9f 100644
--- a/ipc/chromium/src/base/condition_variable.h
+++ b/ipc/chromium/src/base/condition_variable.h
@@ -1,3 +1,5 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
 // Copyright (c) 2011 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.
diff --git a/ipc/chromium/src/base/condition_variable_posix.cc b/ipc/chromium/src/base/condition_variable_posix.cc
index d7004c95daa2..2f8bfd651377 100644
--- a/ipc/chromium/src/base/condition_variable_posix.cc
+++ b/ipc/chromium/src/base/condition_variable_posix.cc
@@ -1,3 +1,5 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
 // Copyright (c) 2011 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.
diff --git a/ipc/chromium/src/base/condition_variable_win.cc b/ipc/chromium/src/base/condition_variable_win.cc
index 68e6149c0dc8..4ffc8d01045f 100644
--- a/ipc/chromium/src/base/condition_variable_win.cc
+++ b/ipc/chromium/src/base/condition_variable_win.cc
@@ -1,3 +1,5 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
 // Copyright (c) 2011 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.
diff --git a/ipc/chromium/src/base/lock.h b/ipc/chromium/src/base/lock.h
index 236c2a1925ba..a4edd5c6071d 100644
--- a/ipc/chromium/src/base/lock.h
+++ b/ipc/chromium/src/base/lock.h
@@ -1,3 +1,5 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
 // Copyright (c) 2011 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.
diff --git a/ipc/chromium/src/base/lock_impl.h b/ipc/chromium/src/base/lock_impl.h
index 95d139e879bd..503f8d7ea685 100644
--- a/ipc/chromium/src/base/lock_impl.h
+++ b/ipc/chromium/src/base/lock_impl.h
@@ -1,3 +1,5 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
 // Copyright (c) 2011 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.
diff --git a/ipc/chromium/src/base/lock_impl_posix.cc b/ipc/chromium/src/base/lock_impl_posix.cc
index c9b9f1ac1b11..0fab0f9f9907 100644
--- a/ipc/chromium/src/base/lock_impl_posix.cc
+++ b/ipc/chromium/src/base/lock_impl_posix.cc
@@ -1,3 +1,5 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
 // Copyright (c) 2011 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.
diff --git a/ipc/chromium/src/base/lock_impl_win.cc b/ipc/chromium/src/base/lock_impl_win.cc
index c8f21914416e..ba2676c3c626 100644
--- a/ipc/chromium/src/base/lock_impl_win.cc
+++ b/ipc/chromium/src/base/lock_impl_win.cc
@@ -1,3 +1,5 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
 // Copyright (c) 2011 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.
diff --git a/ipc/glue/TaskFactory.h b/ipc/glue/TaskFactory.h
index 80b767ed9b6f..60d360eda965 100644
--- a/ipc/glue/TaskFactory.h
+++ b/ipc/glue/TaskFactory.h
@@ -1,3 +1,5 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */