Upgrade fbsource/xplat/js to Flow v0.53.0

Reviewed By: avikchaudhuri

Differential Revision:
D5648819
Ninja: T20988071

fbshipit-source-id: 66e5b6747c79ae66b6eb69d40ede5e982c26174f

Libraries/Components/ViewPager/ViewPagerAndroid.android.js

@@ -68,18 +68,16 @@ export type ViewPagerScrollState = $Enum<{
  * }
  * ```
  */
-class ViewPagerAndroid extends React.Component {
-  props: {
-    initialPage?: number,
-    onPageScroll?: Function,
-    onPageScrollStateChanged?: Function,
-    onPageSelected?: Function,
-    pageMargin?: number,
-    peekEnabled?: boolean,
-    keyboardDismissMode?: 'none' | 'on-drag',
-    scrollEnabled?: boolean,
-  };
-
+class ViewPagerAndroid extends React.Component<{
+  initialPage?: number,
+  onPageScroll?: Function,
+  onPageScrollStateChanged?: Function,
+  onPageSelected?: Function,
+  pageMargin?: number,
+  peekEnabled?: boolean,
+  keyboardDismissMode?: 'none' | 'on-drag',
+  scrollEnabled?: boolean,
+}> {
   static propTypes = {
     ...ViewPropTypes,
     /**