Added budget_service.mojom

third_party/WebKit/LayoutTests/http/tests/budget/budget-service-mock.js

Index: third_party/WebKit/LayoutTests/http/tests/budget/budget-service-mock.js
diff --git a/third_party/WebKit/LayoutTests/http/tests/budget/budget-service-mock.js b/third_party/WebKit/LayoutTests/http/tests/budget/budget-service-mock.js
new file mode 100644
index 0000000000000000000000000000000000000000..cb4afa32bd28a0e64aa05bd0fa6baa8330cc3648
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/http/tests/budget/budget-service-mock.js
@@ -0,0 +1,42 @@
+/**
+ * Mock implementation of the budget service.
+ */
+
+"use strict";
+
+const TEST_BUDGET_COST = 1.2;
+const TEST_BUDGET_AT = 2.3;
+const TEST_BUDGET_TIME = new Date().getTime();
+
+let budgetServiceMock = loadMojoModules(
+    'budgetServiceMock',
+    ['third_party/WebKit/public/platform/modules/budget_service/budget_service.mojom',
+     'mojo/public/js/router'
+    ]).then(mojo => {
+  const [budgetService, router] = mojo.modules;
+
+  class BudgetServiceMock {
+    constructor(interfaceProvider) {
+      interfaceProvider.addInterfaceOverrideForTesting(
+          budgetService.BudgetService.name,
+          handle => this.connectBudgetService_(handle));
+
+      this.interfaceProvider_ = interfaceProvider;
+    }
+
+    connectBudgetService_(handle) {
+      this.budgetServiceStub_ = new budgetService.BudgetService.stubClass(this);
+      this.budgetServiceRouter_ = new router.Router(handle);
+      this.budgetServiceRouter_.setIncomingReceiver(this.budgetServiceStub_);
+    }
+
+    getCost(operationType) {
+      return Promise.resolve({ cost:TEST_BUDGET_COST });
+    }
+
+    getBudget() {
+      return Promise.resolve({ budget: [ { time:TEST_BUDGET_TIME, budget_at:TEST_BUDGET_AT } ] });
+    }
+  }
+  return new BudgetServiceMock(mojo.interfaces);
+});