Add settings to used modified module-device-restore to set initial volume.

src/platform/init/pulseaudio.conf

 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 description   "Run pulseaudio when the system starts"
 author        "chromium-os-dev@googlegroups.com"
 
 start on started syslog
 stop on starting halt
 respawn
 
 env USERNAME=chronos
 env XAUTHORITY=/home/chronos/.Xauthority
 env DISPLAY=:0.0
 # TODO(ajwong): pulseaudio wants CAP_NICE.  Readd --use-capabilities after
 # resolving that dependency.
 env MINIJAIL_FLAGS=""
-env PULSEAUDIO_FIRST_RUN=/tmp/pulseaudio-first-run
 env PULSE_STATE_PATH=/home/chronos/.pulse
 env PULSE_RUNTIME_PATH=/var/run/pulse
 env USER_ID=1000
 
 pre-start script
-  # Signal whether or not we need to do initial configuration of pulseaudio.
-  if [ -d ${PULSE_STATE_PATH} ]; then
-    rm -f "${PULSEAUDIO_FIRST_RUN}"
-  else
-    # Try to clean out any bad cruft at this directory, just incase.
-    rm -rf "${PULSE_STATE_PATH}"
-    touch "${PULSEAUDIO_FIRST_RUN}"
-  fi
+  mkdir -p "${PULSE_RUNTIME_PATH}"
+  chown -R chronos:chronos "${PULSE_RUNTIME_PATH}"
 end script
 
-script
-  # Create pulseaudio runtime directory for pulseaudio's pidfile and socket.
-  mkdir -p "${PULSE_RUNTIME_PATH}"
-  chown -R chronos:chronos "${PULSE_RUNTIME_PATH}"
+expect fork
+exec /sbin/minijail ${MINIJAIL_FLAGS} --uid=${USER_ID} -- \
+  /usr/bin/pulseaudio --log-target=syslog --start
 
-  if [ -f "${PULSEAUDIO_FIRST_RUN}" ] ; then
-    # Clean up the first-run signal file.
-    rm -f "${PULSEAUDIO_FIRST_RUN}"
-    exec /sbin/minijail ${MINIJAIL_FLAGS} --uid=${USER_ID} -- \
-      /usr/bin/pulseaudio -F /etc/pulse/firstrun.pa
-  else
-    exec /sbin/minijail ${MINIJAIL_FLAGS} --uid=${USER_ID} -- \
-      /usr/bin/pulseaudio
-  fi
+# Clean up our run directory
+post-stop script
+  rm -rf "${PULSE_RUNTIME_PATH}"
 end script