Implement bluetooth chooser for Chrome Apps on Mac

chrome/browser/extensions/chrome_extension_chooser_dialog.h

+// Copyright 2016 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 CHROME_BROWSER_EXTENSIONS_CHROME_EXTENSION_CHOOSER_DIALOG_H_
+#define CHROME_BROWSER_EXTENSIONS_CHROME_EXTENSION_CHOOSER_DIALOG_H_
+
+#include "base/macros.h"
+#include "build/build_config.h"
+
+class ChooserController;
+
+namespace content {
+class WebContents;
+}
+
+class ChromeExtensionChooserDialog {
+ public:
+  explicit ChromeExtensionChooserDialog(content::WebContents* web_contents)
+      : web_contents_(web_contents) {}
+  ~ChromeExtensionChooserDialog() {}
+
+  content::WebContents* web_contents() const { return web_contents_; }
+
+// TODO(juncai): remove this preprocessor directive once the non-Mac
+// implementation is done.
+#if defined(OS_MACOSX)
+  void ShowDialog(ChooserController* chooser_controller) const;
+#endif  // defined(OS_MACOSX)
+
+ private:
+  content::WebContents* web_contents_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChromeExtensionChooserDialog);
+};
+
+#endif  // CHROME_BROWSER_EXTENSIONS_CHROME_EXTENSION_CHOOSER_DIALOG_H_