Blob support for IDB [Blink]

LayoutTests/storage/indexeddb/blob-delete-objectstore-db-expected.txt

+Test deleting an object store and a database containing blobs.
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+indexedDB = self.indexedDB || self.webkitIndexedDB || self.mozIndexedDB || self.msIndexedDB || self.OIndexedDB;
+
+dbname = "blob-delete-objectstore-db.html"
+indexedDB.deleteDatabase(dbname)
+indexedDB.open(dbname, 1)
+store0 = db.createObjectStore('store0')
+store1 = db.createObjectStore('store1')
+store0.put(blobA, key)
+db.close()
+
+reopen():
+
+deleteObjectStore():
+db.deleteObjectStore('store0')
+
+didDeleteObjectStore()
+trans = db.transaction('store1', 'readwrite')
+store1 = trans.objectStore('store1')
+store1.put(blobB, key)
+db.close()
+request = indexedDB.deleteDatabase(dbname)
+Database deleted.
+PASS successfullyParsed is true
+
+TEST COMPLETE
+