Revert "Skip flaky debug-scopes test"

test/debugger/debugger.status

 # Copyright 2016 the V8 project authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 [
 [ALWAYS, {
   # All tests in the bug directory are expected to fail.
   'bugs/*': [FAIL],
 
   # Issue 3660: Replacing activated TurboFan frames by unoptimized code does
@@ skipping 35 matching lines @@
   # Tests taking too long
   'debug/debug-stepout-scope-part1': [SKIP],
   'debug/debug-stepout-scope-part2': [SKIP],
   'debug/debug-stepout-scope-part3': [SKIP],
   'debug/debug-stepout-scope-part4': [SKIP],
   'debug/debug-stepout-scope-part5': [SKIP],
   'debug/debug-stepout-scope-part6': [SKIP],
   'debug/debug-stepout-scope-part7': [SKIP],
   'debug/debug-stepout-scope-part8': [SKIP],
 
-  # BUG(chromium:664490)
-  'debug/debug-scopes': [SKIP],
-
   # Async function tests taking too long
   # https://bugs.chromium.org/p/v8/issues/detail?id=5411
   'debug/es8/async-debug-caught-exception-cases0': [SKIP],
   'debug/es8/async-debug-caught-exception-cases1': [SKIP],
   'debug/es8/async-debug-caught-exception-cases2': [SKIP],
   'debug/es8/async-debug-caught-exception-cases3': [SKIP],
   'debug/es8/async-function-debug-scopes': [SKIP],
 }],  # 'gc_stress == True'
 
 ##############################################################################
 ['variant == turbofan_opt', {
   # TODO(jarin/mstarzinger): Investigate debugger issues with TurboFan.
   'debug/debug-evaluate-locals': [FAIL],
 }],  # variant == turbofan_opt
 
 ##############################################################################
 ['variant == wasm_traps', {
   '*': [SKIP],
 }],  # variant == wasm_traps
 
 ['arch == s390 or arch == s390x', {
 
   # Stack manipulations in LiveEdit is not implemented for this arch.
   'debug/debug-liveedit-check-stack': [SKIP],
   'debug/debug-liveedit-double-call': [SKIP],
   'debug/debug-liveedit-stack-padding': [SKIP],
   'debug/debug-liveedit-restart-frame': [SKIP],
 }],  # 'arch == s390 or arch == s390x'
 ]