WPT test for reading Blob URLs minted in iframes w/ and w/o sandboxing.

third_party/WebKit/LayoutTests/external/wpt/MANIFEST.json

Index: third_party/WebKit/LayoutTests/external/wpt/MANIFEST.json
diff --git a/third_party/WebKit/LayoutTests/external/wpt/MANIFEST.json b/third_party/WebKit/LayoutTests/external/wpt/MANIFEST.json
index 7897bf39298175ed581953c43b96921bbb442696..47bee417885a5e6d6e618df50182460dffb32b2f 100644
--- a/third_party/WebKit/LayoutTests/external/wpt/MANIFEST.json
+++ b/third_party/WebKit/LayoutTests/external/wpt/MANIFEST.json
@@ -17224,6 +17224,12 @@
      {}
     ]
    ],
+   "FileAPI/url/blob-url-in-sandboxed-iframe.html": [
+    [
+     "/FileAPI/url/blob-url-in-sandboxed-iframe.html",
+     {}
+    ]
+   ],
    "FileAPI/url/origin.sub.html": [
     [
      "/FileAPI/url/origin.sub.html",
@@ -34659,6 +34665,10 @@
    "18972f4ed024eb5e1494ac466426ae32b3f5525f",
    "support"
   ],
+  "FileAPI/url/blob-url-in-sandboxed-iframe.html": [
+   "ea6ccb6eb5b6370b9c524833bf267adf71b0cdf2",
+   "testharness"
+  ],
   "FileAPI/url/origin.sub.html": [
    "427ede39094dacc910250495bc39ae5ad5826279",
    "testharness"