
When user scripts are updated in the renderer, all old scripts are invalidated. Ensure that we don't UAF and have a valid user script object in the injector after the update. BUG=None Review-Url: https://codereview.chromium.org/2277373002 Cr-Commit-Position: refs/heads/master@{#415200}
This will become a reusable extensions module. It implements the core parts of Chrome's extension system, and can be used with any host of the 'content' module.