This directory contains the common infrastructure for the following tests.

• referrer-policy/
• mixed-content/
• upgrade-insecure-requests/

Subdirectories:

• subresource: Serves subresources, with support for redirects, stash, etc. The subresource paths are managed by subresourceMap and fetched in requestVia*() functions in resources/common.js.
• scope: Serves nested contexts, such as iframe documents or workers. Used from invokeFrom*() functions in resources/common.js.