Revert "Unescape fragment for display in Omnibox"

This reverts commit f8625da2e7215aaac6c0c76a636ab8483090943d.

Reason for revert: This change breaks EGTests for iOS Simulator and Device, see:

https://logs.chromium.org/v/?s=chromium%2Fbb%2Fchromium.mac%2Fios-simulator-full-configs%2F1434%2F%2B%2Frecipes%2Fsteps%2Fios_chrome_web_egtests__iPhone_6s_Plus_iOS_10.0_%2F0%2Fstdout

Original change's description:
> Unescape fragment for display in Omnibox
> 
> A change in Chrome 63 causes Chrome to urlencode the fragment component
> of URLs. The Chrome omnibox should decode the fragment component as it
> does for other URL components and matching Firefox.
> 
> Bug: 789163
> Change-Id: If82d72445d904495c8d3e4129ab63be141745328
> Reviewed-on: https://chromium-review.googlesource.com/822819
> Commit-Queue: Eric Lawrence <elawrence@chromium.org>
> Reviewed-by: Peter Kasting <pkasting@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#524123}

TBR=pkasting@chromium.org,elawrence@chromium.org

Change-Id: I9572e8a5d66381478c1faca0f78a66b878a4b059
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 789163
Reviewed-on: https://chromium-review.googlesource.com/828080
Reviewed-by: Eugene But <eugenebut@chromium.org>
Commit-Queue: Eugene But <eugenebut@chromium.org>
Cr-Commit-Position: refs/heads/master@{#524221}
4 files changed