Add content description to bagded icons.

Enabled accesibility so that icons badged by the
managed profile have a content description
that is different to the non-bagdged version.

Bug: 15106236
Change-Id: Id483273173d9539916eebd59111d179087526be3

src/com/android/launcher3/BubbleTextView.java

@@ -125,6 +125,9 @@ public class BubbleTextView extends TextView {
         setCompoundDrawables(null, iconDrawable, null, null);
         setCompoundDrawablePadding(grid.iconDrawablePaddingPx);
         setText(info.title);
+        if (info.contentDescription != null) {
+            setContentDescription(info.contentDescription);
+        }
         setTag(info);
         if (info.isPromise()) {
             setState(ShortcutInfo.PACKAGE_STATE_UNKNOWN); // TODO: persist this state somewhere