[memory-infra] Remove MemoryDumpManagerDelegate

services/resource_coordinator/public/cpp/memory/process_local_dump_manager_impl.h

 // 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.
 
-#ifndef SERVICES_RESOURCE_COORDINATOR_PUBLIC_CPP_MEMORY_MEMORY_DUMP_MANAGER_DELEGATE_IMPL_H_
-#define SERVICES_RESOURCE_COORDINATOR_PUBLIC_CPP_MEMORY_MEMORY_DUMP_MANAGER_DELEGATE_IMPL_H_
+#ifndef SERVICES_RESOURCE_COORDINATOR_PUBLIC_CPP_PROCESS_LOCAL_DUMP_MANAGER_IMPL_H_
+#define SERVICES_RESOURCE_COORDINATOR_PUBLIC_CPP_PROCESS_LOCAL_DUMP_MANAGER_IMPL_H_
 
 #include "base/single_thread_task_runner.h"
 #include "base/synchronization/lock.h"
 #include "base/trace_event/memory_dump_manager.h"
 #include "base/trace_event/memory_dump_request_args.h"
 #include "mojo/public/cpp/bindings/binding.h"
 #include "services/resource_coordinator/public/cpp/memory/coordinator.h"
 #include "services/resource_coordinator/public/interfaces/memory/memory_instrumentation.mojom.h"
 #include "services/service_manager/public/cpp/connector.h"
 
 namespace memory_instrumentation {
 
 // This is the bridge between MemoryDumpManager and the Coordinator service.
 // This indirection is needed to avoid a dependency from //base, where
 // MemoryDumpManager lives, to //services, where the Coordinator service lives.
 //
 // This cannot just be implemented by the Coordinator service, because there is
 // no Coordinator service in child processes. So, in a child process, the
-// delegate remotely connects to the Coordinator service. In the browser
-// process, the delegate locally connects to the Coordinator service.
-class MemoryDumpManagerDelegateImpl
-    : public base::trace_event::MemoryDumpManagerDelegate,
-      public mojom::ProcessLocalDumpManager {
+// local dump manager remotely connects to the Coordinator service. In the
+// browser process, it locally connects to the Coordinator service.
+class ProcessLocalDumpManagerImpl : public mojom::ProcessLocalDumpManager {
  public:
   class Config {
    public:
     Config(service_manager::Connector* connector,
            const std::string& service_name)
         : connector_(connector),
           service_name_(service_name),
           coordinator_(nullptr) {}
     Config(Coordinator* coordinator)
         : connector_(nullptr), coordinator_(coordinator) {}
     ~Config();
 
     service_manager::Connector* connector() const { return connector_; }
 
     const std::string& service_name() const { return service_name_; }
 
     Coordinator* coordinator() const { return coordinator_; }
 
    private:
     service_manager::Connector* connector_;
     const std::string service_name_;
     Coordinator* coordinator_;
     bool is_test_config_;
   };
 
-  explicit MemoryDumpManagerDelegateImpl(const Config& config);
-  ~MemoryDumpManagerDelegateImpl() override;
+  static void InitializeInstance(const Config& config);
 
-  bool IsCoordinator() const override;
-
-  // The base::trace_event::MemoryDumpManager calls this.
+  // Implements base::trace_event::MemoryDumpManager::RequestGlobalDumpCallback.
+  // NOTE: Use MemoryDumpManager::RequestGlobalDump() to request gobal dump.
   void RequestGlobalMemoryDump(
       const base::trace_event::MemoryDumpRequestArgs& args,
-      const base::trace_event::GlobalMemoryDumpCallback& callback) override;
+      const base::trace_event::GlobalMemoryDumpCallback& callback);
 
   Config config() { return config_; }
   void SetAsNonCoordinatorForTesting();
 
  private:
-  friend std::default_delete<MemoryDumpManagerDelegateImpl>;  // For testing
-  friend class MemoryDumpManagerDelegateImplTest;             // For testing
+  friend std::default_delete<ProcessLocalDumpManagerImpl>;  // For testing
+  friend class ProcessLocalDumpManagerImplTest;             // For testing
+
+  ProcessLocalDumpManagerImpl(const Config& config);
+  ~ProcessLocalDumpManagerImpl() override;
 
   // The ProcessLocalDumpManager interface. The coordinator calls this.
   void RequestProcessMemoryDump(
       const base::trace_event::MemoryDumpRequestArgs& args,
       const RequestProcessMemoryDumpCallback& callback) override;
 
   // A proxy callback for updating |pending_memory_dump_guid_|.
   void MemoryDumpCallbackProxy(
       const base::trace_event::GlobalMemoryDumpCallback& callback,
       uint64_t dump_guid,
       bool success);
 
   mojom::CoordinatorPtr coordinator_;
   mojo::Binding<mojom::ProcessLocalDumpManager> binding_;
   const Config config_;
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
   uint64_t pending_memory_dump_guid_;
 
-  // Prevents racy access to |pending_memory_dump_guid_|.
   base::Lock pending_memory_dump_guid_lock_;
 
-  // Prevents racy access to |initialized_|.
-  base::Lock initialized_lock_;
-
-  DISALLOW_COPY_AND_ASSIGN(MemoryDumpManagerDelegateImpl);
+  DISALLOW_COPY_AND_ASSIGN(ProcessLocalDumpManagerImpl);
 };
 
 }  // namespace memory_instrumentation
 
-#endif  // SERVICES_RESOURCE_COORDINATOR_PUBLIC_CPP_MEMORY_MEMORY_DUMP_MANAGER_DELEGATE_IMPL_H_
+#endif  // SERVICES_RESOURCE_COORDINATOR_PUBLIC_CPP_PROCESS_LOCAL_DUMP_MANAGER_IMPL_H_