DevTools: Get rid of WebInspector.panels

LayoutTests/http/tests/inspector/indexeddb/indexeddb-test.js

 var initialize_IndexedDBTest = function() {
 
 InspectorTest.dumpIndexedDBTree = function()
 {
     InspectorTest.addResult("Dumping IndexedDB tree:");
-    var indexedDBTreeElement = WebInspector.panels.resources.indexedDBListTreeElement;
+    var indexedDBTreeElement = WebInspector.inspectorView.panel("resources").indexedDBListTreeElement;
     if (!indexedDBTreeElement.children.length) {
         InspectorTest.addResult("    (empty)");
         return;
     }
     for (var i = 0; i < indexedDBTreeElement.children.length; ++i) {
         var databaseTreeElement = indexedDBTreeElement.children[i];
         InspectorTest.addResult("    database: " + databaseTreeElement.titleText);
         if (!databaseTreeElement.children.length) {
             InspectorTest.addResult("        (no object stores)");
             continue;
@@ skipping 233 matching lines @@
         var request;
         if (key)
             request = objectStore.add(value, key);
         else
             request = objectStore.add(value);
         request.onerror = onIndexedDBError;
         request.onsuccess = commitCallback;
     }
 }