Refactor: fill in the flow missing type (facebook#25496)

Author: c0dedance

packages/scheduler/src/SchedulerProfiling.js

@@ -31,7 +31,7 @@ const TaskYieldEvent = 6;
 const SchedulerSuspendEvent = 7;
 const SchedulerResumeEvent = 8;
 
-function logEvent(entries) {
+function logEvent(entries: Array<number | PriorityLevel>) {
   if (eventLog !== null) {
     const offset = eventLogIndex;
     eventLogIndex += entries.length;

packages/scheduler/src/forks/Scheduler.js

@@ -637,7 +637,7 @@ function requestHostCallback(callback) {
   }
 }
 
-function requestHostTimeout(callback, ms) {
+function requestHostTimeout(callback, ms: number) {
   // $FlowFixMe[not-a-function] nullable value
   taskTimeoutID = localSetTimeout(() => {
     callback(getCurrentTime());

packages/scheduler/src/forks/SchedulerMock.js

@@ -191,7 +191,7 @@ function flushWork(hasTimeRemaining: boolean, initialTime: number) {
   }
 }
 
-function workLoop(hasTimeRemaining, initialTime: number): boolean {
+function workLoop(hasTimeRemaining: boolean, initialTime: number): boolean {
   let currentTime = initialTime;
   advanceTimers(currentTime);
   currentTask = peek(taskQueue);