clang-formats remaining files and adds a presubmit check.

DEPS

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 vars = {
   # The dart_root is the root of our sdk checkout. This is normally
   # simply sdk, but if using special gclient specs it can be different.
   "dart_root": "sdk",
 
   # We use mirrors of all github repos to guarantee reproducibility and
@@ skipping 14 matching lines @@
   "chromium_git": "https://chromium.googlesource.com",
 
   # Only use this temporarily while waiting for a mirror for a new package.
   "github_dartlang": "https://github.com/dart-lang/%s.git",
 
   "gyp_rev": "@6ee91ad8659871916f9aa840d42e1513befdf638",
   "co19_rev": "@d4767b4caea3c5828ad8e053cd051d44a59061af",
 
   # Revisions of GN related dependencies.
   "buildtools_revision": "@39b1db2ab4aa4b2ccaa263c29bdf63e7c1ee28aa",
+  "clang_format_rev": "@0ed791d1387a3c9146ea6c453c646f3c0fc97784",
 
   "gperftools_revision": "@02eeed29df112728564a5dde6417fa4622b57a06",
 
   # Revisions of /third_party/* dependencies.
   "args_tag": "@0.13.5",
   "async_tag": "@1.11.3",
   "barback-0.13.0_rev": "@34853",
   "barback-0.14.0_rev": "@36398",
   "barback-0.14.1_rev": "@38525",
   "barback_tag" : "@0.15.2+9",
@@ skipping 82 matching lines @@
 
 deps = {
   # Stuff needed for GYP to run.
   Var("dart_root") + "/third_party/gyp":
       Var('chromium_git') + '/external/gyp.git' + Var("gyp_rev"),
 
   # Stuff needed for GN build.
   Var("dart_root") + "/buildtools":
      Var('chromium_git') + '/chromium/buildtools.git' +
      Var('buildtools_revision'),
+  Var("dart_root") + "/buildtools/clang_format/script":
+    Var("chromium_git") + "/chromium/llvm-project/cfe/tools/clang-format.git" +
+    Var("clang_format_rev"),
 
   Var("dart_root") + "/tests/co19/src":
       (Var("github_mirror") % "co19") + Var("co19_rev"),
 
   Var("dart_root") + "/third_party/zlib":
       Var("chromium_git") + "/chromium/src/third_party/zlib.git" +
       Var("zlib_rev"),
 
   Var("dart_root") + "/third_party/boringssl":
      (Var("github_dartlang") % "boringssl_gen") + Var("boringssl_gen_rev"),
@@ skipping 252 matching lines @@
       '--quiet',
       '--platform=win*',
       '--bucket',
       'chromium-gn',
       '-s',
       Var('dart_root') + '/buildtools/win/gn.exe.sha1',
     ],
   },
   # Pull clang-format binaries using checked-in hashes.
   {
+    'name': 'clang_format_win',
+    'pattern': '.',
+    'action': [
+      'download_from_google_storage',
+      '--no_auth',
+      '--no_resume',
+      '--quiet',
+      '--platform=win32',
+      '--bucket',
+      'chromium-clang-format',
+      '-s',
+      Var('dart_root') + '/buildtools/win/clang-format.exe.sha1',
+    ],
+  },
+  {
     'name': 'clang_format_linux',
     'pattern': '.',
     'action': [
       'download_from_google_storage',
       '--no_auth',
       '--no_resume',
       '--quiet',
       '--platform=linux*',
       '--bucket',
       'chromium-clang-format',
@@ skipping 160 matching lines @@
     # Update the Windows toolchain if necessary.
     'name': 'win_toolchain',
     'pattern': '.',
     'action': ['python', 'sdk/build/vs_toolchain.py', 'update'],
   },
   {
     "pattern": ".",
     "action": ["python", Var("dart_root") + "/tools/generate_buildfiles.py"],
   },
 ]