Merge pull request microsoft#21 from Microsoft/i1253

Remove contains from HTMLElement

Author: zhengbli

baselines/dom.generated.d.ts

@@ -3962,7 +3962,6 @@ interface HTMLElement extends Element {
     title: string;
     blur(): void;
     click(): void;
-    contains(child: HTMLElement): boolean;
     dragDrop(): boolean;
     focus(): void;
     insertAdjacentElement(position: string, insertedElement: Element): Element;

inputfiles/removedTypes.json

@@ -13,5 +13,10 @@
         "kind": "property",
         "interface": "HTMLElement",
         "name": "className"
+    },
+    {
+        "kind": "method",
+        "interface": "HTMLElement",
+        "name": "contains"
     }
 ]