Merge "[PiP on Desktop] Don't start Transition to update inset if wct is empty." into main

        relayout(mRelayoutParams, startT, finishT, wct, oldRootView, mResult);

        // After this line, mTaskInfo is up-to-date and should be used instead of taskInfo

        if (!wct.isEmpty()) {

            if (DesktopExperienceFlags.ENABLE_DESKTOP_WINDOWING_PIP.isTrue()

                    && mRelayoutParams.mShouldSetAppBounds) {

            // When expanding from PiP to freeform, we need to start a Transition for applying the

            // inset changes so that PiP receives the insets for the final bounds. This is because

            // |mShouldSetAppBounds| applies the insets by modifying app bounds, which can cause a

            // bounds offset that needs to be reported to transition handlers.

                // When expanding from PiP to freeform, we need to start a Transition for applying

                // the inset changes so that PiP receives the insets for the final bounds. This is

                // because |mShouldSetAppBounds| applies the insets by modifying app bounds, which

                // can cause a bounds offset that needs to be reported to transition handlers.

                Trace.beginSection("DesktopModeWindowDecoration#relayout-startTransition");

            mHandler.post(

                    () -> mTransitions.startTransition(TRANSIT_CHANGE, wct, /* handler= */ null));

                mHandler.post(() -> mTransitions.startTransition(TRANSIT_CHANGE, wct,

                        /* handler= */ null));

            } else {

                Trace.beginSection("DesktopModeWindowDecoration#relayout-applyWCT");

                mBgExecutor.execute(() -> mTaskOrganizer.applyTransaction(wct));

            }

            Trace.endSection();

        }

        if (mResult.mRootView == null) {

            // This means something blocks the window decor from showing, e.g. the task is hidden.