Back out "Back out "[yoga][gentest][intrinsic sizing] Gentest and initial tests for intrinsic sizing"" (#1758)

Summary:
Pull Request resolved: https://github.com/facebook/yoga/pull/1758

Original commit changeset: 52d6cc754cb9

Original Phabricator Diff: D66332308

Reviewed By: NickGerleman

Differential Revision: D66662663

fbshipit-source-id: fb3a0d10ec0f0149aeee510148f26ada8eff7e47

gentest/gentest.js

@@ -654,6 +654,13 @@ function pointValue(e, value) {
       return e.YGAuto;
     case 'undefined':
       return e.YGUndefined;
+    case 'max-content':
+      return e.YGMaxContent;
+    case 'fit-content':
+      return e.YGFitContent;
+    case 'stretch':
+    case '-webkit-fill-available':
+      return e.YGStretch;
     default:
       return value;
   }