Made notifications below speedbump grey.

Also fixed a small scrimming bug where headsup where
scrimmed.

Bug: 15408642
Change-Id: I8319ccb001a1d654af055276de3c64ae388a7e47
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/ExpandableView.java b/packages/SystemUI/src/com/android/systemui/statusbar/ExpandableView.java
index 0a5d138..bac65f8 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/ExpandableView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/ExpandableView.java
@@ -234,6 +234,9 @@
 
     public abstract void setScrimAmount(float scrimAmount);
 
+    public void setBelowSpeedBump(boolean below) {
+    }
+
     /**
      * A listener notifying when {@link #getActualHeight} changes.
      */