[Extensions Mac] Implement developer mode warning on mac

chrome/browser/ui/extensions/extension_toolbar_icon_surfacing_bubble_delegate.h

+// Copyright 2015 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_UI_EXTENSIONS_EXTENSION_TOOLBAR_ICON_SURFACING_BUBBLE_DELEGATE_H_
+#define CHROME_BROWSER_UI_EXTENSIONS_EXTENSION_TOOLBAR_ICON_SURFACING_BUBBLE_DELEGATE_H_
+
+#include "base/macros.h"
+#include "chrome/browser/ui/toolbar/toolbar_actions_bar_bubble_delegate.h"
+
+class Profile;
+
+// The delegate for the bubble to briefly educate users about the toolbar
+// redesign.
+class ExtensionToolbarIconSurfacingBubbleDelegate
+    : public ToolbarActionsBarBubbleDelegate {
+ public:
+  explicit ExtensionToolbarIconSurfacingBubbleDelegate(Profile* profile);
+  ~ExtensionToolbarIconSurfacingBubbleDelegate() override;
+
+  // Returns true if the bubble should be shown for the given |profile|.
+  static bool ShouldShowForProfile(Profile* profile);
+
+ private:
+  // ToolbarActionsBarBubbleDelegate:
+  base::string16 GetHeadingText() override;
+  base::string16 GetBodyText() override;
+  base::string16 GetActionButtonText() override;
+  base::string16 GetDismissButtonText() override;
+  base::string16 GetLearnMoreButtonText() override;
+  void OnBubbleShown() override;
+  void OnBubbleClosed(CloseAction action) override;
+
+  Profile* profile_;
+
+  DISALLOW_COPY_AND_ASSIGN(ExtensionToolbarIconSurfacingBubbleDelegate);
+};
+
+#endif  // CHROME_BROWSER_UI_EXTENSIONS_EXTENSION_TOOLBAR_ICON_SURFACING_BUBBLE_DELEGATE_H_