Bug 1416824 - Patch 2: React 16 Vendor Files r=nchevobbe

MozReview-Commit-ID: CLZTmy0irqG

--HG--
extra : rebase_source : 76c9268e7f2dc88b0873a4a639bc731e563aa50c

devtools/client/shared/vendor/moz.build

@@ -15,6 +15,7 @@ DevToolsModules(
     'lodash.js',
     'react-dom-factories.js',
     'react-dom-server.js',
+    'react-dom-test-utils.js',
     'react-dom.js',
     'react-prop-types.js',
     'react-redux.js',
@@ -34,5 +35,6 @@ if CONFIG['DEBUG_JS_MODULES'] or CONFIG['MOZ_DEBUG']:
         'react-dev.js',
         'react-dom-dev.js',
         'react-dom-server-dev.js',
+        'react-dom-test-utils-dev.js',
         'react-prop-types-dev.js',
     )