Upgrade to Flow v0.68.0

Summary:
bypass-lint
ignore-signed-source

Reviewed By: nmote

Differential Revision: D7295893

fbshipit-source-id: 73879269f64034140bcfcec869385256dc7b78d5

src/component/base/DraftEditor.react.js

@@ -335,6 +335,9 @@ class DraftEditor extends React.Component<DraftEditorProps, State> {
 
     // The aria-expanded and aria-haspopup properties should only be rendered
     // for a combobox.
+    /* $FlowFixMe(>=0.68.0 site=www,mobile) This comment suppresses an error
+     * found when Flow v0.68 was deployed. To see the error delete this comment
+     * and run Flow. */
     const ariaRole = this.props.role || 'textbox';
     const ariaExpanded =
       ariaRole === 'combobox' ? !!this.props.ariaExpanded : null;

src/component/handlers/drag/DraftEditorDragHandler.js

@@ -36,6 +36,9 @@ function getSelectionForEvent(
   let node: ?Node = null;
   let offset: ?number = null;
 
+  /* $FlowFixMe(>=0.68.0 site=www,mobile) This comment suppresses an error
+   * found when Flow v0.68 was deployed. To see the error delete this comment
+   * and run Flow. */
   if (typeof document.caretRangeFromPoint === 'function') {
     var dropRange = document.caretRangeFromPoint(event.x, event.y);
     node = dropRange.startContainer;

src/model/encoding/convertFromHTMLToContentBlocks2.js

@@ -664,6 +664,9 @@ class ContentBlocksBuilder {
       let config = blockConfigs[i];
       text += config.text;
       characterList = characterList.concat(config.characterList);
+      /* $FlowFixMe(>=0.68.0 site=www,mobile) This comment suppresses an error
+       * found when Flow v0.68 was deployed. To see the error delete this
+       * comment and run Flow. */
       if (text !== '' && config.blockType !== 'unstyled') {
         text += '\n';
         characterList = characterList.push(characterList.last());