controlled frame: Refactor ControlledFrameApiTest

This migrates most ControlledFrameApiTest over to IsolatedWebAppBuilder
which allows several test apps in chrome/test/data to be removed, and
simplifies how the test IWAs are configured and installed.

Additionally, InProcessBrowserTest already has an http test server, so
this updates the tests to use the existing server to serve content for
<controlledframe> rather than creating a dedicated one.

Bug: b/322386534, b/40191772
Change-Id: I992968d5cd5995ed196f8d2e1a313944bb186848
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5386747


Reviewed-by: Chase Phillips <cmp@chromium.org>
Commit-Queue: Robbie McElrath <rmcelrath@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1277217}