Prepare for ICU roll to 63.1

In Chromium tree, ICU is rolled to 63.1. And, auto-roller will soon
try to roll ICU in v8 to 63.1.  Due to a nodejs trybot issue,
autoroll needs a manual intervention. In the meantime, this CL
will get rid of other blocking issues for ICU update.

Prepare for the ICU roll by revising test/intl as following:

* Line breaking loose mode is now supported in the
Chromium's copy of ICU. Adjust the test expectation.

* ICU's uloc_* can handle overlong locale ids. Drop tests
that are not valid any more.

Once ICU is rolled, a couple of TSAN-suppressed tests can
be unsuppressed, but that has to be done in a separate CL.

Bug: chromium:893196,v8:8272, v8:8110
Test: intl/*, test262/test402/*
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: I17f11457b61376b1e8d41bbbc951fa6cd3355a54
Reviewed-on: https://chromium-review.googlesource.com/c/1289369
Commit-Queue: Jungshik Shin <jshin@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57105}

test/intl/general/invalid-locale.js

@@ -22,18 +22,3 @@ for (let locale  of not_so_long_locales) {
   assertEquals((new Intl.NumberFormat(locale)).resolvedOptions().numberingSystem,
       "latn");
 }
-
-// The point of this test is to make sure that there's no ill-effect with too
-// long a locale name. Because, thhere's no provision in the Ecma 402 on the
-// length limit of a locale ID and BCP 47 (RFC 5646 section 2.1). So, it's
-// a spec violation to treat this as invalid. See TODO(jshin) comment
-// in Runtime_CanonicalizeLanguageTag in runtime-intl.cc .
-var overlong_locales = [
-   "he-up-a-caiaup-araup-ai-pdu-sp-bs-up-arscna-zeieiaup-araup-arscia-rews-us-up-arscna-zeieiaup-araup-arsciap-arscna-zeieiaup-araup-arscie-u-sp-bs-uaup-arscia",
-   "he-up-a-caiaup-araup-ai-pdu-sp-bs-up-arscna-zeieiaup-araup-arscia-rews-us-up-arscna-zeieiaup-araup-arsciap-arscna-zeieiaup-araup-arscie-u-sp-bs-uaup-arscia-xyza",
-   "bs-u-nu-bzcu-cab-cabs-avnlubs-avnihu-zcu-cab-cbs-avnllubs-avnihq-zcu-cab-cbs-ubs-avnihu-cabs-flus-xxd-vnluy-abcd",
-];
-
-for (let locale  of overlong_locales) {
-  assertThrows("var nf = new Intl.NumberFormat('" + locale + "')", RangeError)
-}

test/intl/segmenter/segment-line-following-modes.js

@@ -48,9 +48,9 @@ assertTrue(breakCounts["zh-loose"] > breakCounts["zh-normal"]);
 // and test the break count in normal mode is greater than strict mode.
 assertTrue(breakCounts["zh-normal"] > breakCounts["zh-strict"]);
 // In English, French and Korean
-assertEquals(breakCounts["en-loose"], breakCounts["en-normal"]);
-assertEquals(breakCounts["fr-loose"], breakCounts["fr-normal"]);
-assertEquals(breakCounts["ko-loose"], breakCounts["ko-normal"]);
+assertTrue(breakCounts["en-loose"] >= breakCounts["en-normal"]);
+assertTrue(breakCounts["fr-loose"] >= breakCounts["fr-normal"]);
+assertTrue(breakCounts["ko-loose"] >= breakCounts["ko-normal"]);
 // and test the break count in normal mode is greater than strict mode.
 assertTrue(breakCounts["en-normal"] > breakCounts["en-strict"]);
 assertTrue(breakCounts["fr-normal"] > breakCounts["fr-strict"]);