Improve settings override bubble to indicate policy installed extensions

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 <memory>
@@ skipping 15 matching lines @@
   // The action button. The exact meaning of this is dependent on the bubble.
   // Required.
   NSButton* actionButton_;
 
   // The list of items to display. Optional.
   NSTextField* itemList_;
 
   // The dismiss button. Optional.
   NSButton* dismissButton_;
 
-  // The "learn more" link-style button. Optional.
-  NSButton* learnMoreButton_;
+  // The extra view text as a link-style button. Optional.
+  NSButton* link_;
+
+  // The extra view text as a label. Optional.
+  NSTextField* label_;
+
+  // The extra view icon that can accompany the extra view text. Optional.
+  NSImageView* iconView_;
 
   // This bubble's delegate.
   std::unique_ptr<ToolbarActionsBarBubbleDelegate> delegate_;
 }
 
 // Creates the bubble for a parent window but does not show it.
 - (id)initWithParentWindow:(NSWindow*)parentWindow
                anchorPoint:(NSPoint)anchorPoint
           anchoredToAction:(BOOL)anchoredToAction
                   delegate:(std::unique_ptr<ToolbarActionsBarBubbleDelegate>)
                                delegate;
 
 // Toggles animation for testing purposes.
 + (void)setAnimationEnabledForTesting:(BOOL)enabled;
 
 @property(readonly, nonatomic) NSButton* actionButton;
 @property(readonly, nonatomic) NSTextField* itemList;
 @property(readonly, nonatomic) NSButton* dismissButton;
-@property(readonly, nonatomic) NSButton* learnMoreButton;
+@property(readonly, nonatomic) NSButton* link;
+@property(readonly, nonatomic) NSTextField* label;
+@property(readonly, nonatomic) NSImageView* iconView;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_EXTENSIONS_TOOLBAR_ACTIONS_BAR_BUBBLE_MAC_H_