Revert of [Mac] Remove unnecessary button on 'Bookmark all tabs' window (patchset #2 id:20001 of https://codereview.chromium.org/583633002/)
Reason for revert:
Nonono you can't just hack out lines from xib files! https://codereview.chromium.org/586543002/ rebuilds the xib file in Xcode to accomplish this and more.
Original issue's description:
> [Mac] Remove unnecessary button on 'Bookmark all tabs' window
>
> Remove unnecessary button on 'Bookmark all tabs' window which appears
> before "Bookmarks Bar"
> XIB Changes:
> Removing the line in the following .xib file which is responsible for the appearance of empty button.
> chrome/app/nibs/BookmarkAllTabs.xib
>
> BUG=415554
> R=asvitkine@chromium.org
>
> TEST=
> 1) Launch chrome, open 2-3 tabs.
> 2) Right click on last tab and select 'Bookmark all tabs'
> 3) Empty button shouldn't be shown.
>
> Committed: https://crrev.com/0ce925fc1ee0f53142313d1b63b32dafbeeeaace
> Cr-Commit-Position: refs/heads/master@{#295714}
TBR=asvitkine@chromium.org,shilpa.shri@samsung.com
NOTREECHECKS=true
NOTRY=true
BUG=415554
Review URL: https://codereview.chromium.org/592833002
Cr-Commit-Position: refs/heads/master@{#295976}
2 files changed
