Revert of memory-infra: Finish moving to Mojo (2nd attempt)

services/resource_coordinator/memory/coordinator/coordinator_impl.h

Index: services/resource_coordinator/memory/coordinator/coordinator_impl.h
diff --git a/services/resource_coordinator/memory/coordinator/coordinator_impl.h b/services/resource_coordinator/memory/coordinator/coordinator_impl.h
index 670a673d6d98f1e8ad9caa1f7b6b69666e2426df..7a8e1dcd4b7823a701f5ba57d2981900a49b6a83 100644
--- a/services/resource_coordinator/memory/coordinator/coordinator_impl.h
+++ b/services/resource_coordinator/memory/coordinator/coordinator_impl.h
@@ -9,6 +9,7 @@
 #include <set>
 #include <unordered_map>
 
+#include "base/lazy_instance.h"
 #include "base/memory/ref_counted.h"
 #include "base/threading/thread_checker.h"
 #include "base/trace_event/memory_dump_request_args.h"
@@ -26,13 +27,9 @@
   // Coordinator
   void BindCoordinatorRequest(mojom::CoordinatorRequest) override;
 
-  bool initialize_memory_dump_manager() const {
-    return initialize_memory_dump_manager_;
-  }
-
  private:
-  friend std::default_delete<CoordinatorImpl>;  // For testing
-  friend class CoordinatorImplTest;             // For testing
+  friend class CoordinatorImplTest;  // For testing
+  friend struct base::LazyInstanceTraitsBase<CoordinatorImpl>;
 
   struct QueuedMemoryDumpRequest {
     QueuedMemoryDumpRequest(const base::trace_event::MemoryDumpRequestArgs args,
@@ -42,7 +39,7 @@
     const RequestGlobalMemoryDumpCallback callback;
   };
 
-  CoordinatorImpl(bool initialize_memory_dump_manager);
+  CoordinatorImpl();
   ~CoordinatorImpl() override;
 
   // mojom::Coordinator
@@ -81,8 +78,6 @@
   int failed_memory_dump_count_;
   std::list<QueuedMemoryDumpRequest> queued_memory_dump_requests_;
 
-  const bool initialize_memory_dump_manager_;
-
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(CoordinatorImpl);