Move files in wtf/ to platform/wtf/ (Part 1).

third_party/WebKit/Source/wtf/build_config.h

Index: third_party/WebKit/Source/wtf/build_config.h
diff --git a/third_party/WebKit/Source/wtf/build_config.h b/third_party/WebKit/Source/wtf/build_config.h
index 5d0b90dd58a53ea370b24a0a13965eee7ac8615d..5980e3c178e3f562aede4cddd8c457c8cd757ea9 100644
--- a/third_party/WebKit/Source/wtf/build_config.h
+++ b/third_party/WebKit/Source/wtf/build_config.h
@@ -1,57 +1,9 @@
-/*
- * Copyright (C) 2004, 2005, 2006, 2013 Apple Inc.
- * Copyright (C) 2009 Google Inc. All rights reserved.
- * Copyright (C) 2007-2009 Torch Mobile, Inc.
- * Copyright (C) 2010, 2011 Research In Motion Limited. All rights reserved.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public License
- * along with this library; see the file COPYING.LIB.  If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- *
- */
+// Copyright 2017 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.
 
-#ifndef WTF_build_config_h
-#define WTF_build_config_h
+#include "platform/wtf/build_config.h"
 
-#include "build/build_config.h"
-#include "wtf/Compiler.h"
-
-/* ==== Platform adaptation macros: these describe properties of the target
- * environment. ==== */
-
-/* HAVE() - specific system features (headers, functions or similar) that are
- * present or not */
-#define HAVE(WTF_FEATURE) (defined HAVE_##WTF_FEATURE && HAVE_##WTF_FEATURE)
-/* OS() - underlying operating system; only to be used for mandated low-level
-   services like
-   virtual memory, not to choose a GUI toolkit */
-#define OS(WTF_FEATURE) (defined OS_##WTF_FEATURE && OS_##WTF_FEATURE)
-
-/* ==== Policy decision macros: these define policy choices for a particular
- * port. ==== */
-
-/* USE() - use a particular third-party library or optional OS service */
-#define USE(WTF_FEATURE) \
-  (defined WTF_USE_##WTF_FEATURE && WTF_USE_##WTF_FEATURE)
-/* ENABLE() - turn on a specific feature of WebKit */
-#define ENABLE(WTF_FEATURE) \
-  (defined ENABLE_##WTF_FEATURE && ENABLE_##WTF_FEATURE)
-
-/* There is an assumption in the project that either OS(WIN) or OS(POSIX) is
- * set. */
-#if !OS(WIN) && !OS(POSIX)
-#error Either OS(WIN) or OS(POSIX) needs to be set.
-#endif
-
-#endif  // WTF_build_config_h
+// The contents of this header was moved to platform/wtf as part of
+// WTF migration project. See the following post for details:
+// https://groups.google.com/a/chromium.org/d/msg/blink-dev/tLdAZCTlcAA/bYXVT8gYCAAJ