tree dd105cda5b16808f6df12d60d3186ac60fc7cf0a
parent 2d1eb74a8e5deed8b567426ce448a9e37b11cfee
author Jean-Michel Trivi <jmtrivi@google.com> 1356547589 -0800
committer Jean-Michel Trivi <jmtrivi@google.com> 1356547589 -0800

Add comments in AudioService focus and media button stack traversal

Add comments to reflect where and why the audio focus and media
 button stacks are traversed with an iterator, which traverses
 the stack from bottom to top.

Change-Id: I462a522195e742295d13eff5fc727e59a5d7e830