Indexed DB: Adopt BufferSource model for binary keys

LayoutTests/storage/indexeddb/resources/testharness-helpers.js

+function idb_test(description, onUpgrade, onOpen) {
+    async_test(function(t) {
+        var dbName = 'db' + location.pathname + '-' + description;
+        var deleteRequest = indexedDB.deleteDatabase(dbName);
+        deleteRequest.onerror = t.unreached_func('deleteDatabase should not fail');
+        deleteRequest.onsuccess = t.step_func(function(e) {
+            var openRequest = indexedDB.open(dbName);
+            openRequest.onerror = t.unreached_func('open should not fail');
+            openRequest.onupgradeneeded = t.step_func(function(e) {
+                onUpgrade(t, openRequest.result);
+            });
+            openRequest.onsuccess = t.step_func(function(e) {
+                onOpen(t, openRequest.result);
+            });
+        });
+    }, description);
+}
+
+function assert_key_equals(a, b, message) {
+    assert_equals(indexedDB.cmp(a, b), 0, message);

[cmumford, 2015/04/27 17:14:23]

expected is first argument.

+}