Fix build by adding missing modules

Summary:
Recent diffs added these two dependencies, which live outside the draft-js folder and so they don't get copied over to the github repo.

Options:

- **Copy them as our own versions inside the draft.js folder.** This means they have to be named something unique, and since they are utility functions it'd be kind of odd.

- **Copy them to the folder of files that get shipped to the repo.** Since they live outside the realm of Haste, they can have the same name.

I went for the latter.

Reviewed By: creedarky

Differential Revision: D21148037

fbshipit-source-id: ba08de495912e23474df0d7649b6e64dbae45940

src/util/getOwnObjectValues.js

@@ -0,0 +1,26 @@
+/**
+ * Copyright 2004-present Facebook. All Rights Reserved.
+ *
+ * @flow strict
+ * @typechecks
+ * @format
+ */
+
+/**
+ * Retrieve an object's own values as an array. If you want the values in the
+ * protoype chain, too, use getObjectValuesIncludingPrototype.
+ *
+ * If you are looking for a function that creates an Array instance based
+ * on an "Array-like" object, use createArrayFrom instead.
+ *
+ * @param {object} obj An object.
+ * @return {array}     The object's values.
+ */
+function getOwnObjectValues<TValue>(obj: {
+  +[key: string]: TValue,
+  ...,
+}): Array<TValue> {
+  return Object.keys(obj).map(key => obj[key]);
+}
+
+module.exports = getOwnObjectValues;

src/util/uuid.js

@@ -0,0 +1,23 @@
+/**
+ * Copyright 2004-present Facebook. All Rights Reserved.
+ *
+ * @typechecks
+ * @flow strict
+ * @format
+ */
+
+/*eslint-disable no-bitwise */
+
+/**
+ * Based on the rfc4122-compliant solution posted at
+ * http://stackoverflow.com/questions/105034
+ */
+function uuid(): string {
+  return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, c => {
+    const r = (Math.random() * 16) | 0;
+    const v = c == 'x' ? r : (r & 0x3) | 0x8;
+    return v.toString(16);
+  });
+}
+
+module.exports = uuid;