Upstream Chrome on iOS source code [2/11].

ios/chrome/browser/sessions/tab_restore_service_delegate_impl_ios_factory.h

Index: ios/chrome/browser/sessions/tab_restore_service_delegate_impl_ios_factory.h
diff --git a/ios/chrome/browser/sessions/tab_restore_service_delegate_impl_ios_factory.h b/ios/chrome/browser/sessions/tab_restore_service_delegate_impl_ios_factory.h
new file mode 100644
index 0000000000000000000000000000000000000000..af83912088a22aa88c5e471c145962fb32d05e07
--- /dev/null
+++ b/ios/chrome/browser/sessions/tab_restore_service_delegate_impl_ios_factory.h
@@ -0,0 +1,46 @@
+// Copyright 2014 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 IOS_CHROME_BROWSER_SESSIONS_TAB_RESTORE_SERVICE_DELEGATE_IMPL_IOS_FACTORY_H_
+#define IOS_CHROME_BROWSER_SESSIONS_TAB_RESTORE_SERVICE_DELEGATE_IMPL_IOS_FACTORY_H_
+
+#include <memory>
+
+#include "base/macros.h"
+#include "components/keyed_service/ios/browser_state_keyed_service_factory.h"
+
+namespace base {
+template <typename T>
+struct DefaultSingletonTraits;
+}  // namespace base
+
+namespace ios {
+class ChromeBrowserState;
+}
+
+class TabRestoreServiceDelegateImplIOS;
+
+class TabRestoreServiceDelegateImplIOSFactory
+    : public BrowserStateKeyedServiceFactory {
+ public:
+  static TabRestoreServiceDelegateImplIOS* GetForBrowserState(
+      ios::ChromeBrowserState* browser_state);
+
+  static TabRestoreServiceDelegateImplIOSFactory* GetInstance();
+
+ private:
+  friend struct base::DefaultSingletonTraits<
+      TabRestoreServiceDelegateImplIOSFactory>;
+
+  TabRestoreServiceDelegateImplIOSFactory();
+  ~TabRestoreServiceDelegateImplIOSFactory() override;
+
+  // BrowserStateKeyedServiceFactory implementation.
+  std::unique_ptr<KeyedService> BuildServiceInstanceFor(
+      web::BrowserState* context) const override;
+
+  DISALLOW_COPY_AND_ASSIGN(TabRestoreServiceDelegateImplIOSFactory);
+};
+
+#endif  // IOS_CHROME_BROWSER_SESSIONS_TAB_RESTORE_SERVICE_DELEGATE_IMPL_IOS_FACTORY_H_