Revert of [GRC] Process Coordination Unit support for Global Resource Controller

services/resource_coordinator/public/cpp/coordination_unit_id.h

Index: services/resource_coordinator/public/cpp/coordination_unit_id.h
diff --git a/services/resource_coordinator/public/cpp/coordination_unit_id.h b/services/resource_coordinator/public/cpp/coordination_unit_id.h
index a14579993f786d97c831821e88144176493bff22..71e9612ea0e88853ccd728f16572f82bb7cab5a0 100644
--- a/services/resource_coordinator/public/cpp/coordination_unit_id.h
+++ b/services/resource_coordinator/public/cpp/coordination_unit_id.h
@@ -14,22 +14,16 @@
 // This is a native struct rather than a mojom struct as we eventually want
 // to annotate base::TaskRunner with CUs for cost attribution purses and
 // would like to move it to base/ as easily as possible at that point.
-// TODO(oysteine): Rename to CoordinationUnitGUID to better differentiate the
-// class from the internal id
 struct SERVICES_RESOURCE_COORDINATOR_PUBLIC_CPP_EXPORT CoordinationUnitID {
-  typedef uint64_t CoordinationUnitTypeId;
-
   CoordinationUnitID();
   CoordinationUnitID(const CoordinationUnitType& type,
                      const std::string& new_id);
-  CoordinationUnitID(const CoordinationUnitType& type,
-                     CoordinationUnitTypeId new_id);
 
   bool operator==(const CoordinationUnitID& b) const {
     return id == b.id && type == b.type;
   }
 
-  CoordinationUnitTypeId id;
+  int64_t id;
   CoordinationUnitType type;
 };
 
@@ -41,8 +35,7 @@
 struct hash<resource_coordinator::CoordinationUnitID> {
   uint64_t operator()(
       const resource_coordinator::CoordinationUnitID& id) const {
-    return ((static_cast<uint64_t>(id.type)) << 32) |
-           static_cast<uint64_t>(id.id);
+    return ((static_cast<uint64_t>(id.type)) << 32) | id.id;
   }
 };