DevTools: Remove rudimentary code from RuntimeModel

BUG=

Review URL: https://codereview.chromium.org/266433004

git-svn-id: svn://svn.chromium.org/blink/trunk@172982 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Network Panel: add method and status code filters.

BUG=133733

Review URL: https://codereview.chromium.org/261623002

git-svn-id: svn://svn.chromium.org/blink/trunk@172983 bbb929c8-8fbe-4397-9dbb-9b2b20218538