Import Cobalt 20.master.0.234144

Includes the following patches:
  https://cobalt-review.googlesource.com/c/cobalt/+/5590
  by n1214.hwang@samsung.com

  https://cobalt-review.googlesource.com/c/cobalt/+/5530
  by errong.leng@samsung.com

  https://cobalt-review.googlesource.com/c/cobalt/+/5570
  by devin.cai@mediatek.com
diff --git a/src/v8/test/debugger/debug/debug-step-microtask.js b/src/v8/test/debugger/debug/debug-step-microtask.js
index 258f235..633bac8 100644
--- a/src/v8/test/debugger/debug/debug-step-microtask.js
+++ b/src/v8/test/debugger/debug/debug-step-microtask.js
@@ -44,7 +44,7 @@
   Debug.setListener(null);
   assertNull(exception);
   var expectation =
-    ["debugger;","debugger;","  print(1);","}","  return 2;","  return 2;",
+    ["debugger;","","  print(1);","}","  return 2;","  return 2;",
      "  throw new Error();","  print(3);","}  // STOP"];
   assertEquals(log, expectation);
 });