Expose BudgetState interface to Workers.

third_party/WebKit/LayoutTests/http/tests/budget/resources/instrumentation-service-worker.js

Index: third_party/WebKit/LayoutTests/http/tests/budget/resources/instrumentation-service-worker.js
diff --git a/third_party/WebKit/LayoutTests/http/tests/budget/resources/instrumentation-service-worker.js b/third_party/WebKit/LayoutTests/http/tests/budget/resources/instrumentation-service-worker.js
index c4491ec18e191abe9c78231046a2f40cf57669fc..e2686ad5d2abf17e37135700b44d62e772f7dd05 100644
--- a/third_party/WebKit/LayoutTests/http/tests/budget/resources/instrumentation-service-worker.js
+++ b/third_party/WebKit/LayoutTests/http/tests/budget/resources/instrumentation-service-worker.js
@@ -54,7 +54,10 @@ self.addEventListener('message', function(workerEvent) {
               WorkerNavigator.prototype.hasOwnProperty('budget') &&
               BudgetService.prototype.hasOwnProperty('getCost') &&
               BudgetService.prototype.hasOwnProperty('getBudget') &&
-              BudgetService.prototype.hasOwnProperty('reserve')
+              BudgetService.prototype.hasOwnProperty('reserve') &&
+              'BudgetState' in self &&
+              BudgetState.prototype.hasOwnProperty('budgetAt') &&
+              BudgetState.prototype.hasOwnProperty('time');

[Peter Beverloo, 2016/12/14 11:37:08]

Something that crossed my mind - we have no tests in either dedicated or shared
workers right now. It'd be cool to at least have some sort of smoke test to
verify that something works.

[harkness, 2016/12/14 13:48:58]

Sure, I can look into adding something for one or both of those.

         } catch(err) {
           message = err.message;
         }