Use a new tab instead of assuming there's a tab available.

BUG=chromium:417248
TEST=this is the test.

Change-Id: I4bcdebc4e7949681c272f9f11dd15b52907c8dde
Reviewed-on: https://chromium-review.googlesource.com/219691
Commit-Queue: Achuith Bhandarkar <achuith@chromium.org>
Tested-by: Achuith Bhandarkar <achuith@chromium.org>
Reviewed-by: Dan Shi <dshi@chromium.org>
1 file changed