Basic framework for Budget API.

third_party/WebKit/Source/modules/budget/Budget.idl

Index: third_party/WebKit/Source/modules/budget/Budget.idl
diff --git a/third_party/WebKit/Source/modules/budget/Budget.idl b/third_party/WebKit/Source/modules/budget/Budget.idl
new file mode 100644
index 0000000000000000000000000000000000000000..3e32cd8f0f55f9f96888e461013e1cc6d4f3b9b0
--- /dev/null
+++ b/third_party/WebKit/Source/modules/budget/Budget.idl
@@ -0,0 +1,17 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// https://beverloo.github.io/budget-api/

[Peter Beverloo, 2016/08/03 13:25:54]

# https://beverloo.github.io/budget-api/#budget-service-interface

[Peter Beverloo, 2016/08/03 13:25:54]

nit: Add a TODO for linking to a WICG spec when it exists?

[harkness, 2016/08/04 14:18:23]

Done.

[harkness, 2016/08/04 14:18:23]

Done.

+
+enum ActionType {
+    "silent-push"
+};
+
+[
+    Exposed=(Window, ServiceWorker),

[Peter Beverloo, 2016/08/03 13:25:55]

The spec says [Exposed=(Window,Worker)], you use Worker -> ServiceWorker. Any
particular reason?

[harkness, 2016/08/04 14:18:23]

This was here from an earlier version, and I wasn't sure about Worker or
ServiceWorker. Changed now.

+    RuntimeEnabled=Budget
+] interface Budget {

[Peter Beverloo, 2016/08/03 13:25:55]

Something to consider: The spec calls this BudgetService, you call this Budget.
One should change. Preferences?

[harkness, 2016/08/04 14:18:23]

When we were talking the other day, I suggested BudgetService, but it seemed
that consensus was for just Budget. Have you gotten any feedback about this
naming on the spec? 

For this CL, I'm going to leave it as Budget. I can change it if we decide to.

+    [CallWith=ScriptState] Promise<double> getCost(ActionType actionType);
+    [CallWith=ScriptState, RaisesException] Promise<FrozenArray<BudgetChunk>> getBudget();
+};