Ensure volume preference has correct defStyleAttr

BUG: 14635756
Change-Id: Id78da5df3d355a4dda9bd1b80b14df54803d5d03
diff --git a/core/java/android/preference/VolumePreference.java b/core/java/android/preference/VolumePreference.java
index 29f2545..39cb826 100644
--- a/core/java/android/preference/VolumePreference.java
+++ b/core/java/android/preference/VolumePreference.java
@@ -66,7 +66,7 @@
     }
 
     public VolumePreference(Context context, AttributeSet attrs) {
-        this(context, attrs, 0);
+        this(context, attrs, com.android.internal.R.attr.dialogPreferenceStyle);
     }
 
     public void setStreamType(int streamType) {