Plumb reserve method of the BudgetAPI

third_party/WebKit/LayoutTests/http/tests/budget/interfaces.html

Index: third_party/WebKit/LayoutTests/http/tests/budget/interfaces.html
diff --git a/third_party/WebKit/LayoutTests/http/tests/budget/interfaces.html b/third_party/WebKit/LayoutTests/http/tests/budget/interfaces.html
index b1489a7fcf5edec89453bf8ede42e372999e249f..a2f47a163b1c8590b9f37e66ac3f6c18e8cbf582 100644
--- a/third_party/WebKit/LayoutTests/http/tests/budget/interfaces.html
+++ b/third_party/WebKit/LayoutTests/http/tests/budget/interfaces.html
@@ -11,6 +11,7 @@
         assert_own_property(Navigator.prototype, 'budget');
         assert_own_property(BudgetService.prototype, 'getCost');
         assert_own_property(BudgetService.prototype, 'getBudget');
+        assert_own_property(BudgetService.prototype, 'reserve');
         assert_equals(navigator.budget, navigator.budget);
 
         navigator.budget.getCost()
@@ -27,6 +28,13 @@
             assert_equals(error.name, 'NotSupportedError');
             assert_equals(error.message, 'Not yet implemented');
           });
+        navigator.budget.reserve()
+          .then(function(cost) {
+            assert_unreached('reserve should have failed.');
+          }, function(error) {
+            assert_equals(error.name, 'NotSupportedError');
+            assert_equals(error.message, 'Not yet implemented');
+          });
       }, 'NavigatorBudget should be exposed and have the expected interface in a Document.');
     </script>
   </body>