flowify a few more Libraries

Libraries/Interaction/InteractionManager.js

@@ -7,6 +7,7 @@
  * of patent rights can be found in the PATENTS file in the same directory.
  *
  * @providesModule InteractionManager
+ * @flow
  */
 'use strict';
 
@@ -70,7 +71,7 @@ var InteractionManager = {
   /**
    * Schedule a function to run after all interactions have completed.
    */
-  runAfterInteractions(callback) {
+  runAfterInteractions(callback: Function) {
     invariant(
       typeof callback === 'function',
       'Must specify a function to schedule.'
@@ -82,7 +83,7 @@ var InteractionManager = {
   /**
    * Notify manager that an interaction has started.
    */
-  createInteractionHandle() {
+  createInteractionHandle(): number {
     scheduleUpdate();
     var handle = ++_inc;
     _addInteractionSet.add(handle);
@@ -92,7 +93,7 @@ var InteractionManager = {
   /**
    * Notify manager that an interaction has completed.
    */
-  clearInteractionHandle(handle) {
+  clearInteractionHandle(handle: number) {
     invariant(
       !!handle,
       'Must provide a handle to clear.'