[memory-infra] Remove MemoryDumpManagerDelegate

services/resource_coordinator/public/cpp/memory/memory_dump_manager_delegate_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_
-
-#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 {
- 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;
-
-  bool IsCoordinator() const override;
-
-  // The base::trace_event::MemoryDumpManager calls this.
-  void RequestGlobalMemoryDump(
-      const base::trace_event::MemoryDumpRequestArgs& args,
-      const base::trace_event::GlobalMemoryDumpCallback& callback) override;
-
-  Config config() { return config_; }
-  void SetAsNonCoordinatorForTesting();
-
- private:
-  friend std::default_delete<MemoryDumpManagerDelegateImpl>;  // For testing
-  friend class MemoryDumpManagerDelegateImplTest;             // For testing
-
-  // 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);
-};
-
-}  // namespace memory_instrumentation
-
-#endif  // SERVICES_RESOURCE_COORDINATOR_PUBLIC_CPP_MEMORY_MEMORY_DUMP_MANAGER_DELEGATE_IMPL_H_