[tools] Use arch-specific clang-format on Mac

Bug: chromium:1312860
Change-Id: I3b30e1ffea640fa1fdfdd73fc1ac1cb38d68f616
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3565718Reviewed-by: Tamer Tas <tmrts@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79724}

DEPS

@@ -85,7 +85,7 @@ deps = {
   'build':
     Var('chromium_url') + '/chromium/src/build.git' + '@' + '3444906fc96f38ef006babefe3ebbd77890c16cc',
   'buildtools':
-    Var('chromium_url') + '/chromium/src/buildtools.git' + '@' + 'd8c375426d8f7f4147f7d4109bb63c12655fb8d6',
+    Var('chromium_url') + '/chromium/src/buildtools.git' + '@' + 'e1471b21ee9c6765ee95e9db0c76fe997ccad35c',
   'buildtools/clang_format/script':
     Var('chromium_url') + '/external/github.com/llvm/llvm-project/clang/tools/clang-format.git' + '@' + 'e435ad79c17b1888b34df88d6a30a094936e3836',
   'buildtools/linux64': {
@@ -376,15 +376,29 @@ hooks = [
     ],
   },
   {
-    'name': 'clang_format_mac',
+    'name': 'clang_format_mac_x64',
     'pattern': '.',
-    'condition': 'host_os == "mac"',
-    'action': [ 'download_from_google_storage',
+    'condition': 'host_os == "mac" and host_cpu == "x64"',
+    'action': [ 'python3',
+                'third_party/depot_tools/download_from_google_storage.py',
+                '--no_resume',
+                '--no_auth',
+                '--bucket', 'chromium-clang-format',
+                '-s', 'buildtools/mac/clang-format.x64.sha1',
+                '-o', 'buildtools/mac/clang-format',
+    ],
+  },
+  {
+    'name': 'clang_format_mac_arm64',
+    'pattern': '.',
+    'condition': 'host_os == "mac" and host_cpu == "arm64"',
+    'action': [ 'python3',
+                'third_party/depot_tools/download_from_google_storage.py',
                 '--no_resume',
-                '--platform=darwin',
                 '--no_auth',
                 '--bucket', 'chromium-clang-format',
-                '-s', 'buildtools/mac/clang-format.sha1',
+                '-s', 'buildtools/mac/clang-format.arm64.sha1',
+                '-o', 'buildtools/mac/clang-format',
     ],
   },
   {