Merge commit 'd0dcd1011617e4bed5c1f16f8c2c8f3a9fb7217b' * commit 'd0dcd1011617e4bed5c1f16f8c2c8f3a9fb7217b': Implement new title bar hiding/showing behavior.
Merge commit 'd0dcd1011617e4bed5c1f16f8c2c8f3a9fb7217b' * commit 'd0dcd1011617e4bed5c1f16f8c2c8f3a9fb7217b': Implement new title bar hiding/showing behavior.