Delay hiding the cast icon for 3 seconds. DO NOT MERGE

Ensure that the user has had a chance to see it for a few
seconds after screen recording has ended.

(cherry picked from commit 8fd25bf7711aabffe73213ba1f9056f285270695)

Bug: 19121797
Change-Id: I7a5c12b371b735c756ca5a3e8716c385fb3fbfe9
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBarPolicy.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBarPolicy.java
index 5c254a26..025a0f9 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBarPolicy.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBarPolicy.java
@@ -106,6 +106,14 @@
         }
     };
 
+    private Runnable mRemoveCastIconRunnable = new Runnable() {
+        @Override
+        public void run() {
+            if (DEBUG) Log.v(TAG, "updateCast: hiding icon NOW");
+            mService.setIconVisibility(SLOT_CAST, false);
+        }
+    };
+
     public PhoneStatusBarPolicy(Context context, CastController cast, HotspotController hotspot) {
         mContext = context;
         mCast = cast;
@@ -304,11 +312,17 @@
             }
         }
         if (DEBUG) Log.v(TAG, "updateCast: isCasting: " + isCasting);
+        mHandler.removeCallbacks(mRemoveCastIconRunnable);
         if (isCasting) {
             mService.setIcon(SLOT_CAST, R.drawable.stat_sys_cast, 0,
                     mContext.getString(R.string.accessibility_casting));
+            mService.setIconVisibility(SLOT_CAST, true);
+        } else {
+            // don't turn off the screen-record icon for a few seconds, just to make sure the user
+            // has seen it
+            if (DEBUG) Log.v(TAG, "updateCast: hiding icon in 3 sec...");
+            mHandler.postDelayed(mRemoveCastIconRunnable, 3000);
         }
-        mService.setIconVisibility(SLOT_CAST, isCasting);
     }
 
     private final HotspotController.Callback mHotspotCallback = new HotspotController.Callback() {