am 4eeb1047: Merge 13212f83 from gingerbread-plus-aosp

* commit '4eeb10470ffafe8c508027f363ac66b58da5bf00':
  Fix issue 2988031.
diff --git a/services/audioflinger/AudioPolicyManagerBase.cpp b/services/audioflinger/AudioPolicyManagerBase.cpp
index 18abc0b..e84d136 100644
--- a/services/audioflinger/AudioPolicyManagerBase.cpp
+++ b/services/audioflinger/AudioPolicyManagerBase.cpp
@@ -1893,7 +1893,8 @@
         AudioSystem::DEVICE_OUT_WIRED_HEADPHONE |
         AudioSystem::DEVICE_OUT_ANLG_DOCK_HEADSET |
         AudioSystem::DEVICE_OUT_DGTL_DOCK_HEADSET)) &&
-        (getStrategy((AudioSystem::stream_type)stream) == STRATEGY_SONIFICATION) &&
+        ((getStrategy((AudioSystem::stream_type)stream) == STRATEGY_SONIFICATION) ||
+         (stream == AudioSystem::SYSTEM)) &&
         streamDesc.mCanBeMuted) {
         volume *= SONIFICATION_HEADSET_VOLUME_FACTOR;
         // when the phone is ringing we must consider that music could have been paused just before