[Extensions Mac] Implement developer mode warning on mac

chrome/browser/ui/toolbar/toolbar_actions_bar_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_TOOLBAR_TOOLBAR_ACTIONS_BAR_BUBBLE_DELEGATE_H_
 #define CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_ACTIONS_BAR_BUBBLE_DELEGATE_H_
 
-// A delegate for the toolbar actions bar bubble, which briefly tells users
-// about the toolbar redesign.
+#include "base/strings/string16.h"
+
+// A delegate for a generic bubble that hangs off the toolbar actions bar.
 class ToolbarActionsBarBubbleDelegate {
  public:
   enum CloseAction {
-    ACKNOWLEDGED,
-    DISMISSED,
+    CLOSE_LEARN_MORE,
+    CLOSE_EXECUTE,
+    CLOSE_DISMISS
   };
 
-  virtual void OnToolbarActionsBarBubbleShown() = 0;
-  virtual void OnToolbarActionsBarBubbleClosed(CloseAction action) = 0;
+  virtual ~ToolbarActionsBarBubbleDelegate() {}
+
+  // Gets the text for the bubble's heading (title).
+  virtual base::string16 GetHeadingText() = 0;
+
+  // Gets the text for the bubble's body.
+  virtual base::string16 GetBodyText() = 0;
+
+  // Gets the text for the main button on the bubble; this button will
+  // correspond with ACTION_EXECUTE.
+  virtual base::string16 GetActionButtonText() = 0;
+
+  // Gets the text for a second button on the bubble; this button will
+  // correspond with ACTION_DISMISS. If this returns an empty string, no
+  // button will be added.
+  virtual base::string16 GetDismissButtonText() = 0;
+
+  // Gets the text for a "learn more" link-style button on the bubble; this
+  // button will correspond with ACTION_LEARN_MORE. If this returns an empty
+  // string, no button will be added.
+  virtual base::string16 GetLearnMoreButtonText() = 0;
+
+  // Called when the bubble is shown.
+  virtual void OnBubbleShown() = 0;
+
+  // Called when the bubble is closed with the type of action the user took.
+  virtual void OnBubbleClosed(CloseAction action) = 0;
 };
 
 #endif  // CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_ACTIONS_BAR_BUBBLE_DELEGATE_H_