Cleanup queryAll to return List<Element>.

samples/third_party/dromaeo/tests/dom-query-htmlidiomatic.dart

Index: samples/third_party/dromaeo/tests/dom-query-htmlidiomatic.dart
diff --git a/samples/third_party/dromaeo/tests/dom-query-htmlidiomatic.dart b/samples/third_party/dromaeo/tests/dom-query-htmlidiomatic.dart
index cb5284db6eac8a99d89be1559b8ec3ed0f403699..b65d00810873f6417d4495d55b9a59fe89d41dff 100644
--- a/samples/third_party/dromaeo/tests/dom-query-htmlidiomatic.dart
+++ b/samples/third_party/dromaeo/tests/dom-query-htmlidiomatic.dart
@@ -50,37 +50,37 @@ void main() {
     })
     .test('getElementsByTagName(div)', () {
       for (int i = 0; i < num; i++) {
-        ElementList elems = document.queryAll('div');
+        List<Element> elems = document.queryAll('div');
         ret = elems.last().$dom_nodeType;
       }
     })
     .test('getElementsByTagName(p)', () {
       for (int i = 0; i < num; i++) {
-        ElementList elems = document.queryAll('p');
+        List<Element> elems = document.queryAll('p');
         ret = elems.last().$dom_nodeType;
       }
     })
     .test('getElementsByTagName(a)', () {
       for (int i = 0; i < num; i++) {
-        ElementList elems = document.queryAll('a');
+        List<Element> elems = document.queryAll('a');
         ret = elems.last().$dom_nodeType;
       }
     })
     .test('getElementsByTagName(*)', () {
       for (int i = 0; i < num; i++) {
-        ElementList elems = document.queryAll('*');
+        List<Element> elems = document.queryAll('*');
         ret = elems.last().$dom_nodeType;
       }
     })
     .test('getElementsByTagName (not in document)', () {
       for (int i = 0; i < num; i++) {
-        ElementList elems = document.queryAll('strong');
+        List<Element> elems = document.queryAll('strong');
         ret = elems.isEmpty();
       }
     })
     .test('getElementsByName', () {
       for (int i = 0; i < num * 20; i++) {
-        ElementList elems = document.queryAll('[name="test$num"]');
+        List<Element> elems = document.queryAll('[name="test$num"]');
         ret = elems.last().$dom_nodeType;
         elems = document.queryAll('[name="test$num"]');
         ret = elems.last().$dom_nodeType;