Add MDP for TabRestorer.

components/sessions/core/persistent_tab_restore_service.cc

 // Copyright 2012 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.
 
 #include "components/sessions/core/persistent_tab_restore_service.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <string.h>
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/stl_util.h"
 #include "base/task/cancelable_task_tracker.h"
 #include "base/time/time.h"
+#include "base/trace_event/memory_dump_manager.h"
 #include "components/sessions/core/base_session_service.h"
 #include "components/sessions/core/base_session_service_commands.h"
 #include "components/sessions/core/base_session_service_delegate.h"
 #include "components/sessions/core/session_command.h"
 #include "components/sessions/core/session_constants.h"
 
 namespace sessions {
 
 namespace {
 
@@ skipping 850 matching lines @@
 
 // PersistentTabRestoreService -------------------------------------------------
 
 PersistentTabRestoreService::PersistentTabRestoreService(
     std::unique_ptr<TabRestoreServiceClient> client,
     TimeFactory* time_factory)
     : client_(std::move(client)),
       delegate_(new Delegate(client_.get())),
       helper_(this, delegate_.get(), client_.get(), time_factory) {
   delegate_->set_tab_restore_service_helper(&helper_);
+  base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
+      &helper_,
+      "PersistentTabRestoreService",
+      base::ThreadTaskRunnerHandle::Get());
 }
 
-PersistentTabRestoreService::~PersistentTabRestoreService() {}
+PersistentTabRestoreService::~PersistentTabRestoreService() {
+  base::trace_event::MemoryDumpManager::GetInstance()->UnregisterDumpProvider(
+      &helper_);
+}
 
 void PersistentTabRestoreService::AddObserver(
     TabRestoreServiceObserver* observer) {
   helper_.AddObserver(observer);
 }
 
 void PersistentTabRestoreService::RemoveObserver(
     TabRestoreServiceObserver* observer) {
   helper_.RemoveObserver(observer);
 }
@@ skipping 58 matching lines @@
 
 TabRestoreService::Entries* PersistentTabRestoreService::mutable_entries() {
   return &helper_.entries_;
 }
 
 void PersistentTabRestoreService::PruneEntries() {
   helper_.PruneEntries();
 }
 
 }  // namespace sessions