[test262] Use standalone Test262 harness project

TC-39 recently decided to remove the Python-based testing harness from the
Test262 project [1]. The code has been duplicated in a standalone project;
update V8's dependencies to fetch from that new location. This is based on
an earlier patch by Mike Pennisi.

[1] 2b9722db9b/es7/2016-05/may-25.md

BUG=v8:5078

Review-Url: https://codereview.chromium.org/2131743002
Cr-Commit-Position: refs/heads/master@{#37985}

.gitignore

@@ -59,6 +59,7 @@ shell_g
 /test/simdjs/data
 /test/test262/data
 /test/test262/data.tar
+/test/test262/harness
 /testing/gmock
 /testing/gtest
 /third_party

DEPS

@@ -34,6 +34,8 @@ deps = {
   "v8/test/simdjs/data": Var("git_url") + "/external/github.com/tc39/ecmascript_simd.git" + "@" + "baf493985cb9ea7cdbd0d68704860a8156de9556",
   "v8/test/test262/data":
     Var("git_url") + "/external/github.com/tc39/test262.git" + "@" + "88bc7fe7586f161201c5f14f55c9c489f82b1b67",
+  "v8/test/test262/harness":
+    Var("git_url") + "/external/github.com/test262-utils/test262-harness-py.git" + "@" + "cbd968f54f7a95c6556d53ba852292a4c49d11d8",
   "v8/tools/clang":
     Var("git_url") + "/chromium/src/tools/clang.git" + "@" + "0b50729d487ec853d8f7c762c81cb2ad2785e674",
 }

test/test262/archive.py

@@ -19,7 +19,8 @@ tarfile.grp = None
 tarfile.pwd = None
 
 def filter_git(tar_info):
-  if tar_info.name.startswith(os.path.join('data', '.git')):
+  if tar_info.name.startswith(os.path.join('data', '.git')) or \
+      tar_info.name.startswith(os.path.join('harness', '.git')):
     return None
   else:
     tar_info.uname = tar_info.gname = "test262"
@@ -27,6 +28,7 @@ def filter_git(tar_info):
 
 with tarfile.open('data.tar', 'w') as tar:
   tar.add('data', filter=filter_git)
+  tar.add('harness', filter=filter_git)
 
 # Workaround for GN. We can't specify the tarfile as output because it's
 # not in the product directory. Therefore we track running of this script

test/test262/list.py

@@ -5,10 +5,11 @@
 
 import os
 import tarfile
+from itertools import chain
 
 os.chdir(os.path.dirname(os.path.abspath(__file__)))
 
-for root, dirs, files in os.walk("data"):
+for root, dirs, files in chain(os.walk("data"), os.walk("harness")):
   dirs[:] = [d for d in dirs if not d.endswith('.git')]
   for name in files:
     # These names are for gyp, which expects slashes on all platforms.

test/test262/testcfg.py

@@ -47,7 +47,10 @@ TEST_262_NATIVE_FILES = ["detachArrayBuffer.js"]
 
 TEST_262_SUITE_PATH = ["data", "test"]
 TEST_262_HARNESS_PATH = ["data", "harness"]
-TEST_262_TOOLS_PATH = ["data", "tools", "packaging"]
+TEST_262_TOOLS_PATH = ["harness", "src"]
+
+sys.path.append(os.path.join(os.path.dirname(os.path.abspath(__file__)),
+                             *TEST_262_TOOLS_PATH))
 
 ALL_VARIANT_FLAGS_STRICT = dict(
     (v, [flags + ["--use-strict"] for flags in flag_sets])