DevTools: Hide the elements breadcrumbs from screen readers
DevTools: Hide the elements breadcrumbs from screen readers

The breadcrumbs are quite noisey, and they dont provide any extra
functionality to a keyboard user who can just move left up the dom tree

Change-Id: Id54a137b85bd0c72724710e1d38e314890675b8d
Reviewed-on: https://chromium-review.googlesource.com/1228095
Reviewed-by: Erik Luo <26192f5e05d23e5ee959014fb911d780e566545b@chromium.org>
Commit-Queue: Joel Einbinder <bab755abe9fee48fe544272e55f73517d4e4a725@chromium.org>
Cr-Original-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#591901}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 4fd13554938cb5303ae622198aa356c01581d41c
ChromeDevTools/devtools-frontend,dart-archive/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,dart-archive/devtools-frontend,dart-archive/devtools-frontend,ChromeDevTools/devtools-frontend,dart-archive/devtools-frontend,dart-archive/devtools-frontend,dart-archive/devtools-frontend,ChromeDevTools/devtools-frontend