[test] add --no-harness option to debugger tests.

test/debugger/testcfg.py

Index: test/debugger/testcfg.py
diff --git a/test/debugger/testcfg.py b/test/debugger/testcfg.py
index a07acbce5bd5f05dc4d20b8b8f6c3b520bffc119..bfb60f109c3fc84839fa55d8fa4d988e1a633637 100644
--- a/test/debugger/testcfg.py
+++ b/test/debugger/testcfg.py
@@ -51,7 +51,8 @@ class DebuggerTestSuite(testsuite.TestSuite):
         break
 
     files = []
-    files.append(os.path.normpath(os.path.join(self.root, "..", "mjsunit", "mjsunit.js")))
+    if not context.no_harness and not NO_HARNESS_PATTERN.search(source):

[caitp, 2017/05/08 13:26:21]

This line throws for me since NO_HARNESS_PATTERN is undefined in this file. It
can be fixed by copying that line from the mjsunit testcfg.py

[Michael Achenbach, 2017/05/08 13:34:23]

Yea - the right side isn't covered on our bots. I'd revert this and we should
reland it fixed and with other required changes.

Why do you even need this locally? Do you try to make it work with custom
snapshot? On the bot we only test mjsunit with --no-harness.

+      files.append(os.path.normpath(os.path.join(self.root, "..", "mjsunit", "mjsunit.js")))
     files.append(os.path.join(self.root, "test-api.js"))
     files.extend([ os.path.normpath(os.path.join(self.root, '..', '..', f))
                   for f in files_list ])