We purge it [here](https://github.com/facebook/react/blob/b11540ccb2321aeb7259fcf0b3a38aeeea35231d/src/isomorphic/ReactDebugTool.js#L88-L89) but this code doesn’t run because of the [early exit](https://github.com/facebook/react/blob/b11540ccb2321aeb7259fcf0b3a38aeeea35231d/src/isomorphic/ReactDebugTool.js#L53-L57).

Need to fix this and add a test case to make sure we don’t regress on it.

if (__DEV__) {
      if (!isProfiling) {
        return;
      }
      isProfiling = false;
      resetMeasurements();
    }
  },
  getFlushHistory() {
    if (__DEV__) {
      return flushHistory;
    }
  },
  onBeginFlush() {
    if (__DEV__) {
      currentFlushNesting++;
      resetMeasurements();
    }
    emitEvent('onBeginFlush');
  },
  onEndFlush() {