[tkadlec]

Not by itself, but it does provide a portion of what is needed. Specifically:

> The developer may want to use the policy to assert a promise to a client or an embedder about the use—or lack of thereof—of certain features and APIs. For example, to enable certain types of "fast path" optimizations in the browser, or to assert a promise about conformance with some requirements set by other embedders - e.g. various social networks, search engines, and so on.

You're right that there's more to it though.