Revert of [debugger] re-enable step in frame test. (patchset #1 id:1 of...

Revert of [debugger] re-enable step in frame test. (patchset #1 id:1 of https://codereview.chromium.org/1518403004/ )

Reason for revert:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20sim%20-%20gc%20stress/builds/4780/steps/Mjsunit/logs/debug-step-4-in-frame

Original issue's description:
> [debugger] re-enable step in frame test.
>
> Issue has long been fixed.
>
> R=jkummerow@chromium.org
> BUG=v8:2921
> LOG=N
>
> Committed: https://crrev.com/f27105b17a23a64faeae33b939555840e388136e
> Cr-Commit-Position: refs/heads/master@{#32862}

TBR=jkummerow@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:2921

Review URL: https://codereview.chromium.org/1522333003

Cr-Commit-Position: refs/heads/master@{#32863}

test/mjsunit/debug-step-4-in-frame.js

@@ -113,20 +113,20 @@ TestCase(undefined, 0, "0,0,-1");
 TestCase(undefined, 1, "0,0,-1");
 TestCase(undefined, 2, "0,0,0");
 TestCase(undefined, 5, "0,0,1");
-TestCase(undefined, 8, "0,0,2");
+TestCase(undefined, 8, "0,0,3");
 
 // Stepping in the frame #0 (should be exactly the same as above).
 TestCase(0, 0, "0,0,-1");
 TestCase(0, 1, "0,0,-1");
 TestCase(0, 2, "0,0,0");
 TestCase(0, 5, "0,0,1");
-TestCase(0, 8, "0,0,2");
+TestCase(0, 8, "0,0,3");
 
 // Stepping in the frame #1.
 TestCase(1, 0, "0,0,3");
 TestCase(1, 3, "0,1,3");
-TestCase(1, 7, "0,2,3");
+TestCase(1, 7, "0,3,3");
 
 // Stepping in the frame #2.
 TestCase(2, 3, "1,3,3");
-TestCase(2, 7, "2,3,3");
+TestCase(2, 7, "3,3,3");

test/mjsunit/mjsunit.status

@@ -30,6 +30,11 @@
   # All tests in the bug directory are expected to fail.
   'bugs/*': [FAIL],
 
+  ##############################################################################
+  # Flaky tests.
+  # BUG(v8:2921).
+  'debug-step-4-in-frame': [PASS, FAIL, SLOW],
+
   ##############################################################################
   # Fails.
   'regress/regress-1119': [FAIL],