Clean up activity a bit and disable it by default

Test: visual & demo mode
Change-Id: I3718e7f58d21a28ae937064882c4edff10534701
Fixes: 36020978
diff --git a/packages/SystemUI/res/layout/signal_cluster_view.xml b/packages/SystemUI/res/layout/signal_cluster_view.xml
index 4d03f0f..da7e4d7 100644
--- a/packages/SystemUI/res/layout/signal_cluster_view.xml
+++ b/packages/SystemUI/res/layout/signal_cluster_view.xml
@@ -53,6 +53,26 @@
             />
     </FrameLayout>
     <FrameLayout
+        android:layout_height="17dp"
+        android:layout_width="wrap_content">
+        <ImageView
+            android:id="@+id/wifi_in"
+            android:layout_height="wrap_content"
+            android:layout_width="wrap_content"
+            android:src="@drawable/ic_activity_down"
+            android:visibility="gone"
+            android:paddingEnd="2dp"
+            />
+        <ImageView
+            android:id="@+id/wifi_out"
+            android:layout_height="wrap_content"
+            android:layout_width="wrap_content"
+            android:src="@drawable/ic_activity_up"
+            android:paddingEnd="2dp"
+            android:visibility="gone"
+            />
+    </FrameLayout>
+    <FrameLayout
         android:id="@+id/wifi_combo"
         android:layout_height="wrap_content"
         android:layout_width="wrap_content"