Taskbar in Desktop Windowing Mode

Test: presubmit
Bug: 330146462
Flag: NONE
Change-Id: Ib33f90704c3010df6a52e2a1c420960b11dbd0d4

src/com/android/launcher3/util/window/WindowManagerProxy.java

@@ -114,6 +114,13 @@ public class WindowManagerProxy implements ResourceBasedOverride, SafeCloseable
         return result;
     }
 
+    /**
+     * Returns if we are in desktop mode or not.
+     */
+    public boolean isInDesktopMode() {
+        return false;
+    }
+
     /**
      * Returns the real bounds for the provided display after applying any insets normalization
      */