Black list failing Turbofan debugger test.

TBR=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/501433002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23295 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/mjsunit/mjsunit.status

@@ -97,6 +97,7 @@
   'deserialize-reference': [PASS, NO_VARIANTS],
 
   # Support for %GetFrameDetails is missing and requires checkpoints.
+  'debug-backtrace-text': [PASS, NO_VARIANTS],
   'debug-evaluate-bool-constructor': [PASS, NO_VARIANTS],
   'debug-evaluate-closure': [PASS, NO_VARIANTS],
   'debug-evaluate-const': [PASS, NO_VARIANTS],