• packages/react-devtools-timeline/src/view-base/vertical-scroll-overflow/index.js
• packages/react-devtools-timeline/src/view-base/vertical-scroll-overflow/VerticalScrollBarView.js
• packages/react-devtools-timeline/src/view-base/vertical-scroll-overflow/VerticalScrollOverflowView.js
• packages/react-devtools-timeline/src/view-base/vertical-scroll-overflow/withVerticalScrollbarLayout.js