Bug 1540899 - Disable nested-context-navigations.html on win and linux. r=jgraham

Differential Revision: https://phabricator.services.mozilla.com/D28318

--HG--
extra : moz-landing-system : lando

testing/web-platform/meta/resource-timing/nested-context-navigations.html.ini

@@ -0,0 +1,4 @@
+[nested-context-navigations.html]
+  disabled:
+    if (os == "linux"): https://bugzilla.mozilla.org/show_bug.cgi?id=1540899
+    if (os == "win"): https://bugzilla.mozilla.org/show_bug.cgi?id=1540899