[interpreter, debugger] implement bytecode break location iterator.

test/mjsunit/mjsunit.status

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@@ skipping 892 matching lines @@
 
   # TODO(rmcilroy,4680): Check failed: osr_normal_entry.
   'regress/regress-123919': [FAIL],
 
   # TODO(rmcilroy,4680): Pass on debug, fail on release.
   'compiler/regress-stacktrace-methods': [PASS, FAIL],
 
   # TODO(rmcilroy,4680): Test assert failures.
   'array-literal-feedback': [FAIL],
   'undetectable-compare': [FAIL],
-  'stack-traces': [FAIL],
   'debug-liveedit-2': [FAIL],
   'compiler/deopt-tonumber-compare': [FAIL],
   'es6/string-search': [FAIL],
   'es6/tail-call-proxies': [FAIL],
   'es6/tail-call': [FAIL],
   'es6/tail-call-simple': [FAIL],
   'es6/mirror-collections': [FAIL],
   'es6/block-const-assign': [FAIL],
   'es6/regress/regress-468661': [FAIL],
   'harmony/string-replace': [FAIL],
@@ skipping 100 matching lines @@
   # Tests taking too long.
   'array-functions-prototype-misc': [SKIP],
   'strong/implicit-conversions': [SKIP],
   'strong/load-element-mutate-backing-store': [SKIP],
 
   # Stack overflow.
   'big-array-literal': [SKIP],
 }],  # 'gcov_coverage'
 
 ]