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services/resource_coordinator/coordination_unit/frame_coordination_unit_impl.cc

Index: services/resource_coordinator/coordination_unit/frame_coordination_unit_impl.cc
diff --git a/services/resource_coordinator/coordination_unit/frame_coordination_unit_impl.cc b/services/resource_coordinator/coordination_unit/frame_coordination_unit_impl.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a64d1c1f02826b3b32369c096061d46faa04fa61
--- /dev/null
+++ b/services/resource_coordinator/coordination_unit/frame_coordination_unit_impl.cc
@@ -0,0 +1,48 @@
+// 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.
+
+#include "services/resource_coordinator/coordination_unit/frame_coordination_unit_impl.h"
+
+#include <utility>
+
+namespace service_manager {
+class ServiceContextRef;
+}
+
+namespace resource_coordinator {
+
+struct CoordinationUnitID;
+
+FrameCoordinationUnitImpl::FrameCoordinationUnitImpl(
+    const CoordinationUnitID& id,
+    std::unique_ptr<service_manager::ServiceContextRef> service_ref)
+    : CoordinationUnitImpl(id, std::move(service_ref)) {}
+
+FrameCoordinationUnitImpl::~FrameCoordinationUnitImpl() = default;
+
+std::set<CoordinationUnitImpl*>
+FrameCoordinationUnitImpl::GetAssociatedCoordinationUnitsOfType(
+    CoordinationUnitType type) {
+  switch (type) {
+    case CoordinationUnitType::kProcess:
+    case CoordinationUnitType::kWebContents:
+      // Processes and WebContents are only associated with a frame if
+      // they are a direct parents of the frame.
+      return GetParentCoordinationUnitsOfType(type);
+    case CoordinationUnitType::kFrame: {
+      // Frame association is recursive: any frame connected to a frame the
+      // frame is connected to are all associated with one another.
+      auto frame_coordination_units = GetChildCoordinationUnitsOfType(type);
+      for (auto* frame_coordination_unit :
+           GetParentCoordinationUnitsOfType(type)) {
+        frame_coordination_units.insert(frame_coordination_unit);
+      }
+      return frame_coordination_units;
+    }
+    default:
+      return std::set<CoordinationUnitImpl*>();
+  }
+}
+
+}  // namespace resource_coordinator