[intl] Fix debug-evaluate-no-side-effect-builtins test

test/debugger/debug/debug-evaluate-no-side-effect-builtins.js

Index: test/debugger/debug/debug-evaluate-no-side-effect-builtins.js
diff --git a/test/debugger/debug/debug-evaluate-no-side-effect-builtins.js b/test/debugger/debug/debug-evaluate-no-side-effect-builtins.js
index da9544ccdf271168a41907dbf60660818c548249..83bda7e7534fc383cf2e5b038cd0f200a785e8c0 100644
--- a/test/debugger/debug/debug-evaluate-no-side-effect-builtins.js
+++ b/test/debugger/debug/debug-evaluate-no-side-effect-builtins.js
@@ -109,10 +109,14 @@ function listener(event, exec_state, event_data, data) {
     for (f of Object.getOwnPropertyNames(String.prototype)) {
       if (typeof String.prototype[f] === "function") {
         // Do not expect locale-specific or regexp-related functions to work.
-        // {Lower,Upper}Case (Locale-specific or not) do not work either.
+        // {Lower,Upper}Case (Locale-specific or not) do not work either
+        // if Intl is enabled.
         if (f.indexOf("locale") >= 0) continue;
-        if (f.indexOf("Lower") >= 0) continue;
-        if (f.indexOf("Upper") >= 0) continue;
+        if (f.indexOf("Locale") >= 0) continue;
+        if (typeof Intl !== 'undefined') {
+          if (f == "toUpperCase") continue;
+          if (f == "toLowerCase") continue;
+        }
         if (f == "normalize") continue;
         if (f == "match") continue;
         if (f == "search") continue;
@@ -123,10 +127,12 @@ function listener(event, exec_state, event_data, data) {
         success("abcd"[f](2), `"abcd".${f}(2);`);
       }
     }
-    fail("'abCd'.toLowerCase()");
-    fail("'abcd'.toUpperCase()");
     fail("'abCd'.toLocaleLowerCase()");
     fail("'abcd'.toLocaleUpperCase()");
+    if (typeof Intl !== 'undefined') {
+      fail("'abCd'.toLowerCase()");
+      fail("'abcd'.toUpperCase()");
+    }
     fail("'abcd'.match(/a/)");
     fail("'abcd'.replace(/a/)");
     fail("'abcd'.search(/a/)");