diff --git a/services/surfaceflinger/DisplayHardware.cpp b/services/surfaceflinger/DisplayHardware.cpp
index eb64c9f..fdde15a 100644
--- a/services/surfaceflinger/DisplayHardware.cpp
+++ b/services/surfaceflinger/DisplayHardware.cpp
@@ -97,7 +97,7 @@
         const sp<SurfaceFlinger>& flinger,
         uint32_t dpy)
     : DisplayHardwareBase(flinger, dpy),
-      mFlinger(flinger), mFlags(0), mHwc(0)
+      mFlinger(flinger), mFlags(0), mHwc(0), mSecureLayerVisible(false)
 {
     init(dpy);
 }
@@ -512,6 +512,26 @@
 
 // ----------------------------------------------------------------------------
 
+void DisplayHardware::setVisibleLayersSortedByZ(const Vector< sp<LayerBase> >& layers) {
+    mVisibleLayersSortedByZ = layers;
+    size_t count = layers.size();
+    for (size_t i=0 ; i<count ; i++) {
+        if (layers[i]->isSecure()) {
+            mSecureLayerVisible = true;
+        }
+    }
+}
+
+Vector< sp<LayerBase> > DisplayHardware::getVisibleLayersSortedByZ() const {
+    return mVisibleLayersSortedByZ;
+}
+
+bool DisplayHardware::getSecureLayerVisible() const {
+    return mSecureLayerVisible;
+}
+
+// ----------------------------------------------------------------------------
+
 status_t DisplayHardware::orientationToTransfrom(
         int orientation, int w, int h, Transform* tr)
 {