Change getRange to sublist. Make getRange deprecated.

tests/html/element_test.dart

Index: tests/html/element_test.dart
diff --git a/tests/html/element_test.dart b/tests/html/element_test.dart
index 35b5b2ec24d33796b017ae6fd2264457fcd394e6..7fc6bfeb5e3acb01f893e5112ca6ec88a3f8bab4 100644
--- a/tests/html/element_test.dart
+++ b/tests/html/element_test.dart
@@ -479,9 +479,9 @@ main() {
       expect(el.children.length, 1);
     });
 
-    test('getRange', () {
+    test('sublist', () {
       var el = makeElementWithChildren();
-      expect(el.children.getRange(1, 1), isElementList);
+      expect(el.children.sublist(1, 2), isElementList);
     });
   });
 
@@ -582,8 +582,8 @@ main() {
       expect(els[2], isHRElement);
     });
 
-    test('getRange', () {
-      expect(getQueryAll().getRange(1, 1) is List<Element>, isTrue);
+    test('sublist', () {
+      expect(getQueryAll().sublist(1, 2) is List<Element>, isTrue);
     });
 
     testUnsupported('[]=', () => getQueryAll()[1] = new Element.tag('br'));
@@ -632,8 +632,8 @@ main() {
       expect(filtered, isElementIterable);
     });
 
-    test('getRange', () {
-      var range = makeElList().getRange(1, 2);
+    test('sublist', () {
+      var range = makeElList().sublist(1, 3);
       expect(range, isElementList);
       expect(range[0], isImageElement);
       expect(range[1], isInputElement);