[Extensions Mac] Implement developer mode warning on mac

chrome/browser/ui/cocoa/extensions/toolbar_actions_bar_bubble_mac.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_COCOA_EXTENSIONS_TOOLBAR_ACTIONS_BAR_BUBBLE_MAC_H_
+#define CHROME_BROWSER_UI_COCOA_EXTENSIONS_TOOLBAR_ACTIONS_BAR_BUBBLE_MAC_H_
+
+#import <Cocoa/Cocoa.h>
+
+#include "base/memory/scoped_ptr.h"
+#import "chrome/browser/ui/cocoa/base_bubble_controller.h"
+
+class ToolbarActionsBarBubbleDelegate;
+
+// A bubble that hangs off the toolbar actions bar, with a minimum of a heading,
+// some text content, and an "action" button. The bubble can also, optionally,
+// have a learn more link and/or a dismiss button.
+@interface ToolbarActionsBarBubbleMac : BaseBubbleController {
+  // Whether or not the bubble has been acknowledged.
+  BOOL acknowledged_;
+
+  // The action button. The exact meaning of this is dependent on the bubble.
+  // Required.
+  NSButton* actionButton_;
+
+  // The dismiss button. Optional.
+  NSButton* dismissButton_;
+
+  // The "learn more" link-style button. Optional.
+  NSButton* learnMoreButton_;
+
+  // This bubble's delegate.
+  scoped_ptr<ToolbarActionsBarBubbleDelegate> delegate_;
+}
+
+// Creates the bubble for a parent window but does not show it.
+- (id)initWithParentWindow:(NSWindow*)parentWindow
+               anchorPoint:(NSPoint)anchorPoint
+                  delegate:(scoped_ptr<ToolbarActionsBarBubbleDelegate>)
+                               delegate;
+
+@property(readonly, nonatomic) NSButton* actionButton;
+@property(readonly, nonatomic) NSButton* dismissButton;
+@property(readonly, nonatomic) NSButton* learnMoreButton;
+
+@end
+
+#endif  // CHROME_BROWSER_UI_COCOA_EXTENSIONS_TOOLBAR_ACTIONS_BAR_BUBBLE_MAC_H_