GitLab

BUG=408688
Test=Launch chrome://extensions with --enable-embedded-extension-options, open SPDY options, navigate to www.google.com, the "Options: SPDY Proxy Extension Options" entry should disappear from the Task Manager.

Review URL: https://codereview.chromium.org/514653003

Cr-Commit-Position: refs/heads/master@{#292505}