Global Resource Coordinator: Basic service internals

services/resource_coordinator/public/interfaces/coordination_unit.mojom

Index: services/resource_coordinator/public/interfaces/coordination_unit.mojom
diff --git a/services/resource_coordinator/public/interfaces/coordination_unit.mojom b/services/resource_coordinator/public/interfaces/coordination_unit.mojom
new file mode 100644
index 0000000000000000000000000000000000000000..921cb03a8c80b859046a2f1e17ecddd8b9e1defc
--- /dev/null
+++ b/services/resource_coordinator/public/interfaces/coordination_unit.mojom
@@ -0,0 +1,34 @@
+// Copyright 2017 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.
+
+module resource_coordinator.mojom;
+
+import "events.mojom";
+
+[Native]
+enum CoordinationUnitType;
+
+[Native]

[Ken Rockot(use gerrit already), 2017/04/10 23:58:00]

Please don't do this. It's useful if you're converting existing IPCs, but these
are all new things you're introducing. Just define CoordinationUnitID as a real
mojom struct and use regular mojo::StructTraits for the typemapping.

+struct CoordinationUnitID;
+
+struct Policy {
+  bool use_background_priority;
+};
+
+interface PolicyCallback {
+  SetPolicy(Policy policy);
+};
+
+interface CoordinationUnit {
+  SendEvent(Event event);
+
+  // Mainly used to force a round-trip to the service over the pipe for
+  // a specific unit, so we don't have to deal with possibly-not-yet-created
+  // children in AddChild()
+  GetID() => (CoordinationUnitID id);
+
+  Duplicate(CoordinationUnit& request);
+  AddChild(CoordinationUnitID child_id);
+  SetPolicyCallback(PolicyCallback callback);
+};