Merge "Do not start drag from pre-drag if cancelled during animation." into tm-qpr-dev

                    if (FeatureFlags.ENABLE_TASKBAR_POPUP_MENU.get()

                            && !shouldStartDrag(0)) {

                        // Immediately close the popup menu.

                        mDragView.setOnAnimationEndCallback(() -> callOnDragStart());

                        mDragView.setOnAnimationEndCallback(() -> {

                            // Drag might be cancelled during the DragView animation, so check

                            // mIsPreDrag again.

                            if (mIsInPreDrag) {

                                callOnDragStart();

                            }

                        });

                    }

                }