[test] Pull test262 as a dependency.

BUG=

Review URL: https://codereview.chromium.org/1396803002

Cr-Commit-Position: refs/heads/master@{#31182}

.gitignore

@@ -64,11 +64,6 @@ shell_g
 /test/simdjs/ecmascript_simd*
 /test/simdjs/data*
 /test/test262/data
-/test/test262/data.old
-/test/test262/tc39-test262-*
-/test/test262-es6/data
-/test/test262-es6/data.old
-/test/test262-es6/tc39-test262-*
 /testing/gmock
 /testing/gtest
 /third_party

DEPS

@@ -19,6 +19,8 @@ deps = {
     Var("git_url") + "/external/github.com/google/googletest.git" + "@" + "6f8a66431cb592dad629028a50b3dd418a408c87",
   "v8/testing/gmock":
     Var("git_url") + "/external/googlemock.git" + "@" + "0421b6f358139f02e102c9c332ce19a33faf75be",
+  "v8/test/test262/data":
+    Var("git_url") + "/external/github.com/tc39/test262.git" + "@" + "26e6fd7c1779a63913cc7720cbc6c87b3b7b3285",
   "v8/tools/clang":
     Var("git_url") + "/chromium/src/tools/clang.git" + "@" + "ee2cf312005aa4d47268041d36bfc50921afea29",
 }

test/test262/README

 This directory contains code for binding the test262 test suite
-into the v8 test harness. To use the tests check out the test262
-tests from
+into the v8 test harness. The tests are checked out as a dependency from
 
-  https://github.com/tc39/test262
+  https://chromium.googlesource.com/external/github.com/tc39/test262
 
-at hash c6ac390 (2015/07/06 revision) as 'data' in this directory.  Using later
-version may be possible but the tests are only known to pass (and indeed run)
-with that revision.
+at hash 26e6fd7 (2015/10/01 revision) as 'data' in this directory. They are
+fetched with 'gclient sync'. To update to a newer version, please change the
+DEPS file.
+
+Using a newer version, e.g. 'deadbeef' may be possible but the tests are only
+known to pass (and indeed run) with that revision. Example:
 
-  git clone https://github.com/tc39/test262 data
   cd data
-  git checkout c6ac390
+  git fetch
+  git checkout deadbeef
 
 If you do update to a newer revision you may have to change the test
 harness adapter code since it uses internal functionality from the

test/test262/testcfg.py

@@ -39,10 +39,6 @@ from testrunner.local import testsuite
 from testrunner.local import utils
 from testrunner.objects import testcase
 
-# The revision hash needs to be 7 characters?
-TEST_262_ARCHIVE_REVISION = "26e6fd7"  # This is the 2015-10-1 revision.
-TEST_262_ARCHIVE_MD5 = "36fdd27f026f396234132fb5afdcfffb"
-TEST_262_URL = "https://github.com/tc39/test262/tarball/%s"
 TEST_262_HARNESS_FILES = ["sta.js", "assert.js"]
 
 TEST_262_SUITE_PATH = ["data", "test"]
@@ -196,49 +192,20 @@ class Test262TestSuite(testsuite.TestSuite):
     return not outcome in (testcase.outcomes or [statusfile.PASS])
 
   def DownloadData(self):
-    revision = TEST_262_ARCHIVE_REVISION
-    archive_url = TEST_262_URL % revision
-    archive_name = os.path.join(self.root, "tc39-test262-%s.tar.gz" % revision)
-    directory_name = os.path.join(self.root, "data")
+    print "Test262 download is deprecated. It's part of DEPS."
+
+    # Clean up old directories and archive files.
     directory_old_name = os.path.join(self.root, "data.old")
+    if os.path.exists(directory_old_name):
+      shutil.rmtree(directory_old_name)
 
-    # Clobber if the test is in an outdated state, i.e. if there are any other
-    # archive files present.
     archive_files = [f for f in os.listdir(self.root)
                      if f.startswith("tc39-test262-")]
-    if (len(archive_files) > 1 or
-        os.path.basename(archive_name) not in archive_files):
+    if len(archive_files) > 0:
       print "Clobber outdated test archives ..."
       for f in archive_files:
         os.remove(os.path.join(self.root, f))
 
-    if not os.path.exists(archive_name):
-      print "Downloading test data from %s ..." % archive_url
-      utils.URLRetrieve(archive_url, archive_name)
-      if os.path.exists(directory_name):
-        if os.path.exists(directory_old_name):
-          shutil.rmtree(directory_old_name)
-        os.rename(directory_name, directory_old_name)
-    if not os.path.exists(directory_name):
-      print "Extracting test262-%s.tar.gz ..." % revision
-      md5 = hashlib.md5()
-      with open(archive_name, "rb") as f:
-        for chunk in iter(lambda: f.read(8192), ""):
-          md5.update(chunk)
-      print "MD5 hash is %s" % md5.hexdigest()
-      if md5.hexdigest() != TEST_262_ARCHIVE_MD5:
-        os.remove(archive_name)
-        print "MD5 expected %s" % TEST_262_ARCHIVE_MD5
-        raise Exception("MD5 hash mismatch of test data file")
-      archive = tarfile.open(archive_name, "r:gz")
-      if sys.platform in ("win32", "cygwin"):
-        # Magic incantation to allow longer path names on Windows.
-        archive.extractall(u"\\\\?\\%s" % self.root)
-      else:
-        archive.extractall(self.root)
-      os.rename(os.path.join(self.root, "tc39-test262-%s" % revision),
-                directory_name)
-
 
 def GetSuite(name, root):
   return Test262TestSuite(name, root)