Bug 1400683 - Disable 'browser_dbg_stack-03.js' on linux64-jsdcov. r=jmaher

This patch disables the test 'devtools/client/debugger/test/mochitest/browser_dbg_stack-03.js' on linux64-jsdcov for perma-failing.

MozReview-Commit-ID: 1NTOI01g6AV

--HG--
extra : rebase_source : 2bf58b1091424ec64b5a0e8571769d11a3d3bc57

devtools/client/debugger/test/mochitest/browser2.ini

@@ -308,7 +308,7 @@ skip-if = e10s && debug
 [browser_dbg_stack-02.js]
 skip-if = e10s && debug
 [browser_dbg_stack-03.js]
-skip-if = e10s || (!e10s && os == "win") # TODO, win !e10s: Bug 1391369
+skip-if = e10s || (!e10s && os == "win") || coverage # TODO, win !e10s: Bug 1391369, coverage: Bug 1400683
 [browser_dbg_stack-04.js]
 skip-if = e10s && debug || (!e10s && os == "win") # Bug 1391369
 [browser_dbg_stack-05.js]