Implement bluetooth chooser for Chrome Apps on Mac

chrome/browser/extensions/chrome_extension_chooser_dialog.h

Index: chrome/browser/extensions/chrome_extension_chooser_dialog.h
diff --git a/chrome/browser/extensions/chrome_extension_chooser_dialog.h b/chrome/browser/extensions/chrome_extension_chooser_dialog.h
new file mode 100644
index 0000000000000000000000000000000000000000..929cd4962cee0ae0a4753bebdce0e3a8e2edcdfa
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+++ b/chrome/browser/extensions/chrome_extension_chooser_dialog.h
@@ -0,0 +1,30 @@
+// 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"
+
+#include "extensions/browser/ui/extension_chooser_dialog.h"
+
+// Chrome implementation of the extensions::ExtensionChooserDialog.
+class ChromeExtensionChooserDialog : public extensions::ExtensionChooserDialog {
+ public:
+  explicit ChromeExtensionChooserDialog(content::WebContents* web_contents)
+      : extensions::ExtensionChooserDialog(web_contents) {}
+  ~ChromeExtensionChooserDialog() override {}
+
+// TODO(juncai): remove this preprocessor directive once the non-Mac
+// implementation is done.
+#if defined(OS_MACOSX)
+  // extensions::ExtensionChooserDialog:
+  void ShowDialog(ChooserController* chooser_controller) const override;
+#endif  // defined(OS_MACOSX)
+
+  DISALLOW_COPY_AND_ASSIGN(ChromeExtensionChooserDialog);
+};
+
+#endif  // CHROME_BROWSER_EXTENSIONS_CHROME_EXTENSION_CHOOSER_DIALOG_H_