IndexedDB: Replace custom binding logic with [SetWrapperReferenceTo]

LayoutTests/storage/indexeddb/key-cursor-request-cycle.html

Index: LayoutTests/storage/indexeddb/key-cursor-request-cycle.html
diff --git a/LayoutTests/storage/indexeddb/cursor-request-cycle.html b/LayoutTests/storage/indexeddb/key-cursor-request-cycle.html
similarity index 89%
copy from LayoutTests/storage/indexeddb/cursor-request-cycle.html
copy to LayoutTests/storage/indexeddb/key-cursor-request-cycle.html
index 4f65843e93caec4a4234c6cc3782723d4bd306c9..4b24ace259f4399614251f4389b773d6bbf62bfc 100644
--- a/LayoutTests/storage/indexeddb/cursor-request-cycle.html
+++ b/LayoutTests/storage/indexeddb/key-cursor-request-cycle.html
@@ -3,7 +3,7 @@
 <script src="resources/shared.js"></script>
 <script>
 
-description("Verify that that cursors weakly hold request, and work if request is GC'd");
+description("Verify that that key cursors weakly hold request, and work if request is GC'd");
 
 indexedDBTest(prepareDatabase, onOpen);
 
@@ -23,7 +23,7 @@ function onOpen(evt)
     evalAndLog("tx = db.transaction('store')");
     evalAndLog("store = tx.objectStore('store')");
 
-    evalAndLog("cursorRequest = store.openCursor()");
+    evalAndLog("cursorRequest = store.openKeyCursor()");
     cursorRequest.onsuccess = function openCursorRequestSuccess(evt) {
         preamble(evt);
         debug("Result will be checked later, to ensure that lazy access is safe");
@@ -39,7 +39,6 @@ function onOpen(evt)
         evalAndLog("cursor = cursorRequest.result");
         shouldBeNonNull("cursor");
         shouldBeEqualToString("cursor.key", "key1");
-        shouldBeEqualToString("cursor.value", "value1");
         evalAndLog("cursorRequest.extra = 123");
         evalAndLog("cursor.extra = 456");
 
@@ -49,7 +48,6 @@ function onOpen(evt)
             evalAndLog("cursor = event.target.result");
             shouldBeNonNull("cursor");
             shouldBeEqualToString("cursor.key", "key2");
-            shouldBeEqualToString("cursor.value", "value2");
             shouldBe("event.target.extra", "123");
             shouldBe("cursor.extra", "456");
         };
@@ -71,7 +69,6 @@ function onOpen(evt)
         finalRequest.onsuccess = function finalRequestSuccess(evt) {
             preamble(evt);
             shouldBeEqualToString("cursor.key", "key2");
-            shouldBeEqualToString("cursor.value", "value2");
 
             cursorObservation = internals.observeGC(cursor);
             evalAndLog("cursor = null");