Prevent the dialog from getting olerlayed.

Bug: 174045870
Test: Tested with the test app attached in http://b/174045870#comment4
Merged-in: I52d846d3aaadb84df953e46cf2f6c9e7cfc23eea
Change-Id: I52d846d3aaadb84df953e46cf2f6c9e7cfc23eea
(cherry picked from commit 0eb99400cd33618089d40647ea12d1da1adc5ba0)
2 files changed