chrome: Support usage of the Chrome toolbar from Views (see issue #2969)

libcef/browser/chrome/views/toolbar_view_impl.h

@@ -0,0 +1,55 @@
+// Copyright 2021 The Chromium Embedded Framework 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 CEF_LIBCEF_BROWSER_CHROME_VIEWS_TOOLBAR_VIEW_IMPL_H_
+#define CEF_LIBCEF_BROWSER_CHROME_VIEWS_TOOLBAR_VIEW_IMPL_H_
+#pragma once
+
+#include "include/views/cef_view_delegate.h"
+
+#include "libcef/browser/chrome/views/toolbar_view_view.h"
+#include "libcef/browser/views/view_impl.h"
+
+class Browser;
+class BrowserView;
+
+class CefToolbarViewImpl
+    : public CefViewImpl<CefToolbarViewView, CefView, CefViewDelegate> {
+ public:
+  typedef CefViewImpl<CefToolbarViewView, CefView, CefViewDelegate> ParentClass;
+
+  // Create a new CefToolbarViewImpl instance. |delegate| may be nullptr.
+  static CefRefPtr<CefToolbarViewImpl> Create(
+      CefRefPtr<CefViewDelegate> delegate,
+      Browser* browser,
+      BrowserView* browser_view,
+      base::Optional<ToolbarView::DisplayMode> display_mode);
+
+  static const char* const kTypeString;
+
+  // CefViewAdapter methods:
+  std::string GetDebugType() override { return kTypeString; }
+
+ private:
+  // Create a new implementation object.
+  // Always call Initialize() after creation.
+  // |delegate| may be nullptr.
+  CefToolbarViewImpl(CefRefPtr<CefViewDelegate> delegate,
+                     Browser* browser,
+                     BrowserView* browser_view,
+                     base::Optional<ToolbarView::DisplayMode> display_mode);
+
+  // CefViewImpl methods:
+  CefToolbarViewView* CreateRootView() override;
+  void InitializeRootView() override;
+
+  Browser* const browser_;
+  BrowserView* const browser_view_;
+  base::Optional<ToolbarView::DisplayMode> const display_mode_;
+
+  IMPLEMENT_REFCOUNTING_DELETE_ON_UIT(CefToolbarViewImpl);
+  DISALLOW_COPY_AND_ASSIGN(CefToolbarViewImpl);
+};
+
+#endif  // CEF_LIBCEF_BROWSER_VIEWS_SCROLL_VIEW_IMPL_H_