[overlay] Making Metal options with value 0 available (#3473)

moiseev · web-flow · commit 4d2a477cce10 · 2016-07-14T12:42:33.000-07:00
Fixes: &lt;rdar://problem/27270578&gt;
diff --git a/apinotes/Metal.apinotes b/apinotes/Metal.apinotes
@@ -10,3 +10,5 @@ Tags:
 Enumerators:
 - Name: MTLTextureUsageUnknown
   SwiftName: unknown
+- Name: MTLStorageModeShared
+  SwiftName: shared
