Only show 'scanning' animation on bouncer

We're trying to minimize how much information the user
has to parse when authenticating.

Fixes: 130223968
Test: manually swipe up and down
Change-Id: I35fa0c417965dd64eefd67ec5a3b7b5076663752
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/KeyguardIndicationController.java b/packages/SystemUI/src/com/android/systemui/statusbar/KeyguardIndicationController.java
index a87e50c..44542eb 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/KeyguardIndicationController.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/KeyguardIndicationController.java
@@ -83,7 +83,7 @@
 
     private final int mSlowThreshold;
     private final int mFastThreshold;
-    private LockIcon mLockIcon;
+    private final LockIcon mLockIcon;
     private StatusBarKeyguardViewManager mStatusBarKeyguardViewManager;
 
     private String mRestingIndication;
@@ -686,5 +686,10 @@
                 updateIndication(false);
             }
         }
+
+        @Override
+        public void onKeyguardBouncerChanged(boolean bouncer) {
+            mLockIcon.setBouncerVisible(bouncer);
+        }
     };
 }