Revert of Redirecting off-origin navigations in PWAs to CCT. (patchset #14 id:580001 of https://codereview.chromium.org/2829943002/ )

Reason for revert:
This CL is likely the culprit for test failures:

https://uberchromegw.corp.google.com/i/chromium.linux/builders/Android%20Tests/builds/42079
https://uberchromegw.corp.google.com/i/chromium.linux/builders/Android%20Tests/builds/42080
https://uberchromegw.corp.google.com/i/chromium.linux/builders/Android%20Tests/builds/42081

Original issue's description:
> Redirects off-origin navigations in an installed PWAs to a CustomTab.
>
> This is done in order to improve UX by getting rid of a "minibar" toolbar
> (to be done in a follow-up patch) and bring more app-like feel to PWAs.
>
> In a long run this will help bring implementation of Minimal-UI, which requires
> replacing "minibar" with a new "minimal-ui" toolbar.
>
> BUG=709889
>
> Review-Url: https://codereview.chromium.org/2829943002
> Cr-Commit-Position: refs/heads/master@{#474625}
> Committed: https://chromium.googlesource.com/chromium/src/+/7c7e9e600d256af4d2af1dbf68b59b030be0ab25

TBR=dominickn@chromium.org,yusufo@chromium.org,pkotwicz@chromium.org,tedchoc@chromium.org,piotrs@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=709889

Review-Url: https://codereview.chromium.org/2905073002
Cr-Commit-Position: refs/heads/master@{#474647}
14 files changed