GitLab

The NewTabPageBarItem was using a NSInteger to store a PanelIdentifier
value. Use directly the enum to avoid conversions.

Bug: 753391
Change-Id: I74e319db566cdb65e93a83b09d1d923b7b446c6f
Reviewed-on: https://chromium-review.googlesource.com/645958Reviewed-by: Mark Cogan <marq@chromium.org>
Commit-Queue: Gauthier Ambard <gambard@chromium.org>
Cr-Commit-Position: refs/heads/master@{#499497}