Merge "Do not letterbox the activity in PiP mode" into udc-dev am: 41667fa9da am: 3b341fdb57

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23503609

Change-Id: I2353256a3898fcd653e4b8e1767cf14d72c47780
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

services/core/java/com/android/server/wm/WindowState.java

@@ -3883,13 +3883,15 @@ class WindowState extends WindowContainer<WindowState> implements WindowManagerP
     }
 
     /**
-     * @return true if activity bounds are letterboxed or letterboxed for diplay cutout.
+     * @return {@code true} if activity bounds are letterboxed or letterboxed for display cutout.
+     * Note that it's always {@code false} if the activity is in pip mode.
      *
      * <p>Note that letterbox UI may not be shown even when this returns {@code true}. See {@link
      * LetterboxUiController#shouldShowLetterboxUi} for more context.
      */
     boolean areAppWindowBoundsLetterboxed() {
         return mActivityRecord != null
+                && !mActivityRecord.inPinnedWindowingMode()
                 && (mActivityRecord.areBoundsLetterboxed() || isLetterboxedForDisplayCutout());
     }