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We have the following requirements:
1. We prefer loading CCA UI in the app window rather than browser tab
  => Therefore we added "capture_navigation=true" for CCA
2. We don't want to load resource URLs or invalid URL in the app window
  => Short term: Landing this CL to filter out unwanted URLs

  We decide not to support URL filtering feature for capture navigation
  since only camera app has such requirement at this moment.
  (crbug.com/1132151)

Bug: 980846
Test: Type CCA url other than chrome://camera-app/views/main.html and
the page is loaded in browser tab

Change-Id: I467aa1498aa9fe975d34bdf82adee7f6dff6a14c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2440076
Commit-Queue: Wei Lee <wtlee@chromium.org>
Reviewed-by: Giovanni Ortuño Urquidi <ortuno@chromium.org>
Reviewed-by: Jiewei Qian  <qjw@chromium.org>
Auto-Submit: Wei Lee <wtlee@chromium.org>
Cr-Commit-Position: refs/heads/master@{#814557}