message: Use fewer functions for typing in the composer
diff: @@ -424,18 +424,6 @@ export default class MessageComposerInput extends React.Component {
  }
  };
  - onTypingActivity() {
  - this.sendTyping(true);
  - }
  -
  - onFinishedTyping() {
  - this.sendTyping(false);
  - }
  -
  - sendTyping(isTyping) {
  - TypingStore.sharedInstance().setSelfTyping(this.props.room.roomId, isTyping);
  - }
  -
  onChange = (change: Change, originalEditorState?: Value) => {
  let editorState = change.value;
  @@ -466,9 +454,9 @@ export default class MessageComposerInput extends React.Component {
  }
  if (Plain.serialize(editorState) !== '') {
  - this.onTypingActivity();
  + TypingStore.sharedInstance().setSelfTyping(this.props.room.roomId, true);
  } else {
  - this.onFinishedTyping();
  + TypingStore.sharedInstance().setSelfTyping(this.props.room.roomId, false);
  }
  if (editorState.startText !== null) {
  