text: // Copyright 2020 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 "chrome/browser/tab/state/tab_state_db_factory.h"
  
  #include "chrome/browser/profiles/profile.h"
  #include "chrome/browser/tab/state/tab_state_db.h"
  #include "components/keyed_service/content/browser_context_dependency_manager.h"
  #include "content/public/browser/browser_context.h"
  #include "content/public/browser/storage_partition.h"
  
  namespace {
  const char kTabStateDBFolder[] = "tab_state_db";
  }  // namespace
  
  // static
  TabStateDBFactory* TabStateDBFactory::GetInstance() {
    return base::Singleton<TabStateDBFactory>::get();
  }
  
  // static
  TabStateDB* TabStateDBFactory::GetForProfile(Profile* profile) {
    // Incognito is currently not supported
    if (profile->IsOffTheRecord())
      return nullptr;
  
    return static_cast<TabStateDB*>(
        GetInstance()->GetServiceForBrowserContext(profile, true));
  }
  
  TabStateDBFactory::TabStateDBFactory()
      : BrowserContextKeyedServiceFactory(
            "TabStateDBKeyedService",
            BrowserContextDependencyManager::GetInstance()) {}
  
  TabStateDBFactory::~TabStateDBFactory() = default;
  
  KeyedService* TabStateDBFactory::BuildServiceInstanceFor(
      content::BrowserContext* context) const {
    Profile* profile = Profile::FromBrowserContext(context);
    DCHECK(!profile->IsOffTheRecord());
  
    leveldb_proto::ProtoDatabaseProvider* proto_database_provider =
        content::BrowserContext::GetDefaultStoragePartition(profile)
            ->GetProtoDatabaseProvider();
    base::FilePath tab_state_db_dir(
        profile->GetPath().AppendASCII(kTabStateDBFolder));
    return new TabStateDB(proto_database_provider, tab_state_db_dir);
  }
  