Basic framework for Budget API.

third_party/WebKit/Source/modules/budget/NavigatorBudget.h

+// 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.
+
+#ifndef NavigatorBudget_h
+#define NavigatorBudget_h
+
+#include "platform/Supplementable.h"
+
+namespace blink {
+
+class Budget;
+class Navigator;
+
+// This exposes the budget object on the Navigator partial interface.
+class NavigatorBudget final :
+    public GarbageCollectedFinalized<NavigatorBudget>,

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

nit: drop the "Finalized" and remove the destructor

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

Done.

+    public Supplement<Navigator> {
+    USING_GARBAGE_COLLECTED_MIXIN(NavigatorBudget);
+    WTF_MAKE_NONCOPYABLE(NavigatorBudget);
+
+public:
+    virtual ~NavigatorBudget();
+    static NavigatorBudget& from(Navigator&);
+
+    static Budget* budget(Navigator&);
+    Budget* budget();
+
+    DECLARE_VIRTUAL_TRACE();
+
+private:
+    explicit NavigatorBudget(Navigator*);
+    static const char* supplementName();
+
+    Member<Navigator> m_navigator;

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

Why do you store |m_navigator| here?

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

Discussed in person, removing it.

+    Member<Budget> m_budget;
+};
+
+} // namespace blink
+
+#endif // NavigatorBudget_h