Update ReactDOM children tests to use createElement

These tests were throwing warnings because of the new deprecation of
React.DOM.

Also re-records fiber tests.

scripts/fiber/tests-failing.txt

@@ -9,10 +9,6 @@ src/isomorphic/classic/__tests__/ReactContextValidator-test.js
 src/renderers/dom/__tests__/ReactDOMProduction-test.js
 * should throw with an error code in production
 
-src/renderers/dom/shared/__tests__/ReactDOM-test.js
-* should allow children to be passed as an argument
-* should overwrite props.children with children argument
-
 src/renderers/dom/shared/__tests__/ReactDOMComponent-test.js
 * should clean up input value tracking
 * should clean up input textarea tracking

scripts/fiber/tests-passing.txt

@@ -627,6 +627,8 @@ src/renderers/dom/shared/__tests__/ReactBrowserEventEmitter-test.js
 
 src/renderers/dom/shared/__tests__/ReactDOM-test.js
 * allows a DOM element to be used with a string
+* should allow children to be passed as an argument
+* should overwrite props.children with children argument
 * should purge the DOM cache when removing nodes
 * throws in render() if the mount callback is not a function
 * throws in render() if the update callback is not a function

src/renderers/dom/shared/__tests__/ReactDOM-test.js

@@ -53,15 +53,15 @@ describe('ReactDOM', () => {
 
   it('should allow children to be passed as an argument', () => {
     var argDiv = ReactTestUtils.renderIntoDocument(
-      React.DOM.div(null, 'child')
+      React.createElement('div', null, 'child')
     );
     var argNode = ReactDOM.findDOMNode(argDiv);
     expect(argNode.innerHTML).toBe('child');
   });
 
   it('should overwrite props.children with children argument', () => {
     var conflictDiv = ReactTestUtils.renderIntoDocument(
-      React.DOM.div({children: 'fakechild'}, 'child')
+      React.createElement('div', {children: 'fakechild'}, 'child')
     );
     var conflictNode = ReactDOM.findDOMNode(conflictDiv);
     expect(conflictNode.innerHTML).toBe('child');