Upstream Chrome on iOS source code [9/11].

ios/chrome/browser/ui/toolbar/toolbar_model_impl_ios.h

+// 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.
+
+#ifndef IOS_CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_MODEL_IMPL_IOS_H_
+#define IOS_CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_MODEL_IMPL_IOS_H_
+
+#import <UIKit/UIKit.h>
+
+#include <memory>
+
+#include "ios/chrome/browser/ui/toolbar/toolbar_model_delegate_ios.h"
+#include "ios/chrome/browser/ui/toolbar/toolbar_model_ios.h"
+
+class ToolbarModelImplIOS : public ToolbarModelIOS {
+ public:
+  explicit ToolbarModelImplIOS(ToolbarModelDelegateIOS* delegate);
+  ~ToolbarModelImplIOS() override;
+
+  // ToolbarModelIOS implementation:
+  ToolbarModel* GetToolbarModel() override;
+  bool IsLoading() override;
+  CGFloat GetLoadProgressFraction() override;
+  bool CanGoBack() override;
+  bool CanGoForward() override;
+  bool IsCurrentTabNativePage() override;
+  bool IsCurrentTabBookmarked() override;
+  bool IsCurrentTabBookmarkedByUser() override;
+  bool ShouldDisplayHintText() override;
+
+ private:
+  ToolbarModelDelegateIOS* delegate_;
+  std::unique_ptr<ToolbarModel> toolbar_model_;
+
+  DISALLOW_IMPLICIT_CONSTRUCTORS(ToolbarModelImplIOS);
+};
+
+#endif  // IOS_CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_MODEL_IMPL_IOS_H_