Improve settings override bubble to indicate policy installed extensions

chrome/browser/ui/extensions/extension_message_bubble_bridge.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_MESSAGE_BUBBLE_BRIDGE_H_
 #define CHROME_BROWSER_UI_EXTENSIONS_EXTENSION_MESSAGE_BUBBLE_BRIDGE_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 14 matching lines @@
  private:
   // ToolbarActionsBarBubbleDelegate:
   bool ShouldShow() override;
   bool ShouldCloseOnDeactivate() override;
   base::string16 GetHeadingText() override;
   base::string16 GetBodyText(bool anchored_to_action) override;
   base::string16 GetItemListText() override;
   base::string16 GetActionButtonText() override;
   base::string16 GetDismissButtonText() override;
   base::string16 GetLearnMoreButtonText() override;
+  std::unique_ptr<ToolbarActionsBarBubbleDelegate::ExtraViewInfo>
+  GetExtraViewInfo() override;
   std::string GetAnchorActionId() override;
   void OnBubbleShown() override;
   void OnBubbleClosed(CloseAction action) override;
 
   std::unique_ptr<extensions::ExtensionMessageBubbleController> controller_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionMessageBubbleBridge);
 };
 
 #endif  // CHROME_BROWSER_UI_EXTENSIONS_EXTENSION_MESSAGE_BUBBLE_BRIDGE_H_