[GRC] Tab CPU Usage Observer

services/resource_coordinator/coordination_unit/coordination_unit_graph_observer.h

Index: services/resource_coordinator/coordination_unit/coordination_unit_graph_observer.h
diff --git a/services/resource_coordinator/coordination_unit/coordination_unit_graph_observer.h b/services/resource_coordinator/coordination_unit/coordination_unit_graph_observer.h
index 9f33e8d8be0a006197478aa8deb0e6655ad4616f..69d3d103a194ca3d16d20a7f82c24d1029c0f9ca 100644
--- a/services/resource_coordinator/coordination_unit/coordination_unit_graph_observer.h
+++ b/services/resource_coordinator/coordination_unit/coordination_unit_graph_observer.h
@@ -16,6 +16,8 @@
 
 namespace resource_coordinator {
 
+class CoordinationUnitManager;
+
 // An observer API for the coordination unit graph maintained by GRC.
 //
 // Observers are instantiated when the resource_coordinator service
@@ -76,7 +78,17 @@ class CoordinationUnitGraphObserver {
   virtual void OnCoordinationUnitWillBeDestroyed(
       const CoordinationUnitImpl* coordination_unit) {}
 
+  void set_coordination_unit_manager(
+      CoordinationUnitManager* coordination_unit_manager) {
+    coordination_unit_manager_ = coordination_unit_manager;
+  }
+  CoordinationUnitManager* coordination_unit_manager() {
+    return coordination_unit_manager_;
+  }
+
  private:
+  CoordinationUnitManager* coordination_unit_manager_ = nullptr;
+
   DISALLOW_COPY_AND_ASSIGN(CoordinationUnitGraphObserver);
 };