Pass the bubble bar screen coordinates to WMShell

This allows WMShell to store the bubble bar coordinates so that it
draw the expanded view above it.

Fixes: 290099589
Test: Manual
       - Add bubbles to the bubble bar
       - Expand the bubble bar
       - Observe that there is enough space between the bar and the
         expanded view
Change-Id: Iff40b2b71369f33f343eb069e119f65723a6984e

quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarViewController.java

@@ -113,8 +113,8 @@ public class BubbleBarViewController {
             mBubbleStashController.stashBubbleBar();
         } else {
             mBubbleBarController.setSelectedBubble(bubble);
-            mSystemUiProxy.showBubble(bubble.getKey(),
-                    mBubbleStashController.isBubblesShowingOnHome());
+            int[] bubbleBarCoords = mBarView.getLocationOnScreen();
+            mSystemUiProxy.showBubble(bubble.getKey(), bubbleBarCoords[0], bubbleBarCoords[1]);
         }
     }
 
@@ -293,8 +293,8 @@ public class BubbleBarViewController {
             } else {
                 final String selectedKey = mBubbleBarController.getSelectedBubbleKey();
                 if (selectedKey != null) {
-                    mSystemUiProxy.showBubble(selectedKey,
-                            mBubbleStashController.isBubblesShowingOnHome());
+                    int[] bubbleBarCoords = mBarView.getLocationOnScreen();
+                    mSystemUiProxy.showBubble(selectedKey, bubbleBarCoords[0], bubbleBarCoords[1]);
                 } else {
                     Log.w(TAG, "trying to expand bubbles when there isn't one selected");
                 }