Add some strings for bubbles; update permission prompt string

* Alters permission prompt text
* Updates settings button content description
* Adds content descriptions for when a single bubble or the stack of
  bubbles is focused (just adds the strings, doesn't actually do anything)
* Adds strings for moving the bubbles around on the screen; these will
  be added as actions in a11y local context menu

Bug: 123541035
Test: it compiles
Change-Id: I069e012eafc7de3b3a28866b6f73fc3227628394
diff --git a/packages/SystemUI/src/com/android/systemui/bubbles/BubbleExpandedView.java b/packages/SystemUI/src/com/android/systemui/bubbles/BubbleExpandedView.java
index 49beae6..14e910f 100644
--- a/packages/SystemUI/src/com/android/systemui/bubbles/BubbleExpandedView.java
+++ b/packages/SystemUI/src/com/android/systemui/bubbles/BubbleExpandedView.java
@@ -410,6 +410,8 @@
             mPermissionView.setVisibility(VISIBLE);
             ((ImageView) mPermissionView.findViewById(R.id.pkgicon)).setImageDrawable(mAppIcon);
             ((TextView) mPermissionView.findViewById(R.id.pkgname)).setText(mAppName);
+            ((TextView) mPermissionView.findViewById(R.id.prompt)).setText(
+                    getResources().getString(R.string.bubbles_prompt, mAppName));
             logBubbleClickEvent(mEntry.notification,
                     StatsLog.BUBBLE_UICHANGED__ACTION__PERMISSION_DIALOG_SHOWN);
         }