Android: Handle gesture navigation favicon callback invoked too late

Favicon callbacks can be invoked after the navigation sheet is already
closed. There is a null check against |mModelList| but it never
becomes null. Its state should have been checked instead. This CL
checks such case correctly.

Bug: 1000220
Change-Id: I724b7c3a7d79e36a99d6c102849312e8010f2548
Commit-Queue: Jinsuk Kim <>
Reviewed-by: Donn Denman <>
Cr-Commit-Position: refs/heads/master@{#692988}
1 file changed