Deprecate the webkit-prefixed standard IndexedDB entry points

LayoutTests/storage/indexeddb/resources/index-cursor.js

 if (this.importScripts) {
     importScripts('../../../resources/js-test.js');
     importScripts('shared.js');
 }
 
-description("Test IndexedDB's webkitIDBIndex.openCursor + the cursor it produces in depth.");
+description("Test IndexedDB's IDBIndex.openCursor + the cursor it produces in depth.");
 
 // In order of how it should be sorted by IndexedDB.
 self.testData = [
     1,
     1,
     3.14159,
     3.14159,
     10,
     // FIXME: Dates.
     "A big string",
@@ skipping 203 matching lines @@
         return;
     }
 
     debug("");
     debug(str);
 
     var request = indexObject.openKeyCursor(null, ascending ? 'next' : 'prev');
     request.onsuccess = cursorIteration;
     request.onerror = unexpectedErrorCallback;
 }