Re-enable and adjust skipped VM debugger tests.

runtime/tests/vm/vm.status

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 # These tests are expected to crash on all platforms.
 cc/ArrayNew_Overflow_Crash: Crash
 cc/AllocGeneric_Overflow: Crash
 cc/CodeImmutability: Crash
 
 cc/SNPrint_BadArgs: Skip
 
-# These tests are skipped because of the workaround to open issue 8594.
-cc/Debug_StackTraceDump1: Skip
-cc/Debug_StackTraceDump2: Skip
-
 # Flaky on buildbot. Issue 5133 and 10409.
 cc/Sleep: Pass, Fail
 
-[ $arch == x64 ]
-cc/IsolateInterrupt: Skip
-
 [ $mode == debug ]
 # This is a benchmark that is not informative in debug mode.
 cc/CorelibIsolateStartup: Skip
 # Negative tests of VerifiedMemory should crash iff in DEBUG mode.
 # TODO(koda): Improve support for negative tests.
 cc/VerifyImplicit_Crash: Crash
 cc/VerifyExplicit_Crash: Crash
 
 # The following section refers to the dart vm tests which live under
 # runtime/tests/vm/dart.
@@ skipping 51 matching lines @@
 dart/optimized_stacktrace_test: StaticWarning
 
 [ $compiler == none && $runtime == ContentShellOnAndroid ]
 dart/byte_array_test: RuntimeError # Issue 17612
 
 [ $runtime != vm ]
 dart/snapshot_version_test: SkipByDesign  # Spawns processes
 
 [ $runtime == vm && $mode == debug && $builder_tag == asan ]
 cc/Dart2JSCompileAll: Skip  # Timeout.