Moving Pause button to the left of the context menu header

See this mock:
https://www.google.com/url?q=https://docs.google.com/presentation/d/1AepsnLeKcRhjMW35SkB5yMKO3u6waigug8Tyfe0LO5o/edit%23slide%3Did.g455d187f2a_0_45&sa=D&ust=1542320415002000&usg=AFQjCNH-jsy5THG1WqxjeYbj628QFMJKvQ

Bug: 117888000
Test: Manual
Change-Id: I1edbc569347f09f0806ad6749735c3dec198277a