Fix window minimization issue in homecher

App list is always shown in homecher mode, so tapping on the app icon of
active window on shelf will not minimize the window due to a piece of
code. And this piece of code will not be reached in non-homecher mode,
since launcher window will get closed when it loses focus. So remove
that code.

Bug: 865156

Change-Id: Iec5c0df445d5ee5f379398069659ebe2f6dcd264
Reviewed-on: https://chromium-review.googlesource.com/1103151
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Weidong Guo <weidongg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#578360}
1 file changed