Move libc++ and libc++abi to buildtools.

DEPS

 # This file is used to manage the dependencies of the Chromium src repo. It is
 # used by gclient to determine what version of each dependency to check out, and
 # where.
 #
 # For more information, please refer to the official documentation:
 #   https://sites.google.com/a/chromium.org/dev/developers/how-tos/get-the-code
 #
 # When adding a new dependency, please update the top-level .gitignore file
 # to list the dependency's destination directory.
 #
@@ skipping 15 matching lines @@
 #  git cl upload
 
 
 vars = {
   # Use this googlecode_url variable only if there is an internal mirror for it.
   # If you do not know, use the full path while defining your new deps entry.
   'googlecode_url': 'http://%s.googlecode.com/svn',
   'sourceforge_url': 'http://svn.code.sf.net/p/%(repo)s/code',
   'llvm_url': 'http://src.chromium.org/llvm-project',
   'llvm_git': 'https://llvm.googlesource.com',
-  'libcxx_revision': '48198f9110397fff47fe7c37cbfa296be7d44d3d',
-  'libcxxabi_revision': '4ad1009ab3a59fa7a6896d74d5e4de5885697f95',
   'webkit_trunk': 'http://src.chromium.org/blink/trunk',
   'webkit_revision': 'f81976174b3506d4341d35a619282d85bb9778fd', # from svn revision 188121
   'chromium_git': 'https://chromium.googlesource.com',
   'chromiumos_git': 'https://chromium.googlesource.com/chromiumos',
   'pdfium_git': 'https://pdfium.googlesource.com',
   'skia_git': 'https://skia.googlesource.com',
   'boringssl_git': 'https://boringssl.googlesource.com',
   'libvpx_revision': 'd3f3dcefb055656807e8a2f65a322bbb13cd05a4',
   'sfntly_revision': '1bdaae8fc788a5ac8936d68bf24f37d977a13dac',
   'skia_revision': 'e34d6bd3e02ee6384f056d11cff8f5bf5e71bb69',
@@ skipping 101 matching lines @@
 
   'src/third_party/safe_browsing/testing':
     Var('chromium_git') + '/external/google-safe-browsing/testing.git' + '@' + '9d7e8064f3ca2e45891470c9b5b1dce54af6a9d6',
 
   'src/third_party/cacheinvalidation/src':
     Var('chromium_git') + '/external/google-cache-invalidation-api/src.git' + '@' + 'c91bd9d9fed06bf440be64f87b94a2effdb32bc4', # from svn revision 341
 
   'src/third_party/leveldatabase/src':
     Var('chromium_git') + '/external/leveldb.git' + '@' + '251ebf5dc70129ad3c38193fe6c99a5b0ec6b9fa',
 
-  'src/third_party/libc++/trunk':
-   Var('chromium_git') + '/chromium/llvm-project/libcxx.git' + '@' +  Var('libcxx_revision'),
-
-  'src/third_party/libc++abi/trunk':
-   Var('chromium_git') + '/chromium/llvm-project/libcxxabi.git' + '@' +  Var('libcxxabi_revision'),
-
   'src/third_party/snappy/src':
     Var('chromium_git') + '/external/snappy.git' + '@' + '762bb32f0c9d2f31ba4958c7c0933d22e80c20bf',
 
   'src/tools/grit':
     Var('chromium_git') + '/external/grit-i18n.git' + '@' + 'a5890a8118c0c80cc0560e6d8d5cf65e5d725509', # from svn revision 185
 
   'src/tools/gyp':
     Var('chromium_git') + '/external/gyp.git' + '@' + '82b08049cc0b1f9e0bdcc0702ac6b523360f635f', # from svn revision 2020
 
   'src/tools/swarming_client':
@@ skipping 619 matching lines @@
     # corresponding .py files have already been deleted.
     'name': 'remove_stale_pyc_files',
     'pattern': 'src/tools/.*\\.py',
     'action': [
         'python',
         'src/tools/remove_stale_pyc_files.py',
         'src/tools',
     ],
   },
 ]