Roll buildtools 86f7e41d94..5fd66957f0

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 37 matching lines @@
   # the commit queue can handle CLs rolling swarming_client
   # and whatever else without interference from each other.
   'swarming_revision': '380e32662312eb107f06fcba6409b0409f8fef72',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling ANGLE
   # and whatever else without interference from each other.
   'angle_revision': '00ff11948e74abac78e2a125c7b85080d8877ada',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling build tools
   # and whatever else without interference from each other.
-  'buildtools_revision': '86f7e41d9424b9d8faf66c601b129855217f9a08',
+  'buildtools_revision': '5fd66957f08bb752dca714a591c84587c9d70762',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.
   'swiftshader_revision': '8be4110779a653fe1ae051f089bce9340147a8d1',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling PDFium
   # and whatever else without interference from each other.
   'pdfium_revision': '2ab466e3a59d845422e06e50bc38d4bf31ac1adf',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling openmax_dl
@@ skipping 942 matching lines @@
   {
     'name': 'clang_format_merge_driver',
     'pattern': '.',
     'action': [ 'python',
                 'src/tools/clang_format_merge_driver/install_git_hook.py',
     ],
   },
 ]
 
 recursedeps = [
+  # buildtools provides clang_format, libc++, and libc++abi
+  'src/buildtools',
   # android_tools manages the NDK.
   'src/third_party/android_tools',
   # ANGLE manages DEPS that it also owns the build files for, such as dEQP.
   ("src/third_party/angle", "DEPS.chromium"),
 ]