Merge "Tweak how we skip transitions for first activity"

        ProtoLog.i(WM_DEBUG_ADD_REMOVE, "Adding activity %s to task %s "

                        + "callers: %s", r, task, new RuntimeException("here").fillInStackTrace());

        // The transition animation and starting window are not needed if {@code allowMoveToFront}

        // is false, because the activity won't be visible.

        if ((!isActivityTypeHomeOrRecents() || hasActivity()) && allowMoveToFront) {

        if (isActivityTypeHomeOrRecents() && getActivityBelow(r) == null) {

            // If this is the first activity, don't do any fancy animations,

            // because there is nothing for it to animate on top of.

            ActivityOptions.abort(options);

            return;

        }

        if (!allowMoveToFront) {

            // The transition animation and starting window are not needed if

            // {@code allowMoveToFront} is false, because the activity won't be visible.

            ActivityOptions.abort(options);

            return;

        }

        final DisplayContent dc = mDisplayContent;

        if (DEBUG_TRANSITION) Slog.v(TAG_TRANSITION,

                "Prepare open transition: starting " + r);

            mWmService.mStartingSurfaceController.showStartingWindow(r, prev, newTask,

                    isTaskSwitch, sourceRecord);

        }

        } else {

            // If this is the first activity, don't do any fancy animations,

            // because there is nothing for it to animate on top of.

            ActivityOptions.abort(options);

        }

    }

    /** On Task switch, finds the top activity that supports PiP. */