Add Location.p.ancestorOrigins (#5977)

See https://trac.webkit.org/changeset/113945/webkit
and https://trac.webkit.org/log/webkit/tags/Safari-536.7/Source

api/Location.json

@@ -47,6 +47,54 @@
           "deprecated": false
         }
       },
+      "ancestorOrigins": {
+        "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Location/ancestorOrigins",
+          "support": {
+            "chrome": {
+              "version_added": "20"
+            },
+            "chrome_android": {
+              "version_added": "25"
+            },
+            "edge": {
+              "version_added": "79"
+            },
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": {
+              "version_added": false
+            },
+            "ie": {
+              "version_added": false
+            },
+            "opera": {
+              "version_added": "15"
+            },
+            "opera_android": {
+              "version_added": "14"
+            },
+            "safari": {
+              "version_added": "6"
+            },
+            "safari_ios": {
+              "version_added": "6"
+            },
+            "samsunginternet_android": {
+              "version_added": "1.5"
+            },
+            "webview_android": {
+              "version_added": "4.4"
+            }
+          },
+          "status": {
+            "experimental": false,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
       "assign": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/Location/assign",