Create container view for bubble bar

The container will be used to inflate the bubble bar flyout view

Flag: com.android.wm.shell.enable_bubble_bar
Bug: 277815200
Test: builds successfully -- code is not wired up yet

Change-Id: I3012caa801c73f9e13f26c8803595b59e250ae1e

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

@@ -29,6 +29,7 @@ import android.util.Log;
 import android.util.TypedValue;
 import android.view.MotionEvent;
 import android.view.View;
+import android.widget.FrameLayout;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
@@ -122,7 +123,8 @@ public class BubbleBarViewController {
     @Nullable
     private BubbleBarBoundsChangeListener mBoundsChangeListener;
 
-    public BubbleBarViewController(TaskbarActivityContext activity, BubbleBarView barView) {
+    public BubbleBarViewController(TaskbarActivityContext activity, BubbleBarView barView,
+            FrameLayout bubbleBarContainer) {
         mActivity = activity;
         mBarView = barView;
         mSystemUiProxy = SystemUiProxy.INSTANCE.get(mActivity);