[debug] remove JSON debug protocol related tests.

test/cctest/cctest.status

 # Copyright 2011 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
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@@ skipping 59 matching lines @@
   # This tests API threading, no point in running several variants.
   # They are also slow in debug mode.
   'test-api/Threading*': [PASS, NO_VARIANTS, ['mode == debug', SLOW]],
 
   # BUG(2999). The cpu profiler tests are notoriously flaky.
   'test-cpu-profiler/CpuProfileDeepStack': [SKIP],
   'test-cpu-profiler/CollectCpuProfile': [SKIP],
   'test-cpu-profiler/HotDeoptNoFrameEntry': [SKIP],
   'test-cpu-profiler/SampleWhenFrameIsNotSetup': [SKIP],
 
-  # BUG(v8:4358). Hangs flakily.
-  'test-debug/ProcessDebugMessagesThreaded': [SKIP],
-
   # BUG(2340). Preprocessing stack traces is disabled at the moment.
   'test-heap/PreprocessStackTrace': [FAIL],
 
   # BUG(4333). Function name inferrer does not work for ES6 clases.
   'test-func-name-inference/UpperCaseClass': [FAIL],
   'test-func-name-inference/LowerCaseClass': [FAIL],
 
   # BUG(3742).
   'test-mark-compact/MarkCompactCollector': [PASS, ['arch==arm', NO_VARIANTS]],
 
@@ skipping 302 matching lines @@
   'test-field-type-tracking/*': [SKIP],
   'test-parsing/*': [SKIP],
   'test-page-promotion/*': [SKIP],
   'test-decls/*': [SKIP],
   'test-log/*': [SKIP],
   'test-gap-resolver/*': [SKIP],
   'test-dtoa/*': [SKIP],
 }],  # variant == wasm_traps
 
 ]