Add a sanity test for bug 97466 -- test that the number of frames while showing inspector overlay for some time is within reasonable limits. This can't be a layout test at the moment, as we need chromium's logic of frame updates (could perhaps be migrated to content_shell in the future).
Created attachment 165618 [details] Patch
Committed r129624: <http://trac.webkit.org/changeset/129624>