Sanitizers: Roll in 16 months of libcxx and libcxxabi changes.

third_party/libc++/BUILD.gn

 # Copyright 2015 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.
 
 config("config") {
   include_dirs = [
     "trunk/include",
     "../libc++abi/trunk/include",
   ]
   cflags = [
     "-fPIC",
     "-fstrict-aliasing",
     "-nostdinc++",
     "-pthread",
     "-std=c++11",
     "-DLIBCXX_BUILDING_LIBCXXABI",
   ]
 }
 
 shared_library("libc++") {
   sources = [
     "trunk/src/algorithm.cpp",
+    "trunk/src/any.cpp",
     "trunk/src/bind.cpp",
     "trunk/src/chrono.cpp",
     "trunk/src/condition_variable.cpp",
     "trunk/src/debug.cpp",
     "trunk/src/exception.cpp",
     "trunk/src/future.cpp",
     "trunk/src/hash.cpp",
     "trunk/src/ios.cpp",
     "trunk/src/iostream.cpp",
     "trunk/src/locale.cpp",
@@ skipping 60 matching lines @@
     "-stdlib=libc++",
 
     # Normally the generator takes care of RPATH. Our case is special because
     # the generator is unaware of the libc++.so dependency. Note that setting
     # RPATH here is a potential security issue. See the following for another
     # example of this issue: https://code.google.com/p/gyp/issues/detail?id=315
     "-Wl,-R,\$ORIGIN/",
   ]
   lib_dirs = [ root_build_dir ]
 }