tree eb904fcbad63fdcd35f1be8f0f5828ce20b83d49
parent e7afe0ae24ffb00408f8903682a7d49a63c10d85
parent 9e8cfd6bd79b2a8bba7fb03bec318115fed34d37
author Yao, Yuxing <yaoyx@google.com> 1523469664 -0700
committer android-build-merger <android-build-merger@google.com> 1523469664 -0700

Merge "Center title if no button is set." into pi-preview1-androidx-dev am: d91b5ed288
am: 9e8cfd6bd7

Change-Id: Id2de80cef73ae97eebde95809bab0abf9ccae7be