c11c3ae4dd
Previously, silent mode was entered if volume was already at 0 and volume down key was pressed once. The new volume management policy specifies that silent mode is entered when volume is at last audible step and volume down key is pressed once. Pressing volume down key continuously will decrease volume until last audible step is reached, not 0. Change-Id: Ib7b530668473d6a5af1e748f445d6185afed2158