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

third_party/WebKit/Source/platform/wtf/build_config.h

 /*
  * 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.
  *
  */
 
 #ifndef WTF_build_config_h
 #define WTF_build_config_h
 
 #include "build/build_config.h"
-#include "wtf/Compiler.h"
+#include "platform/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