Remove linked_ptr usage in //base.

extensions/browser/guest_view/web_view/web_view_guest_delegate.h

 // Copyright 2014 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 EXTENSIONS_BROWSER_GUEST_VIEW_WEB_VIEW_WEB_VIEW_GUEST_DELEGATE_H_
 #define EXTENSIONS_BROWSER_GUEST_VIEW_WEB_VIEW_WEB_VIEW_GUEST_DELEGATE_H_
 
 #include "base/callback.h"
+#include "base/memory/scoped_ptr.h"
 #include "components/guest_view/browser/guest_view_base.h"
 
 namespace content {
 class RenderViewHost;
 class WebContents;
 }  // namespace content
 
 namespace extensions {
 
 class WebViewGuest;
 
 namespace api {
 namespace web_view_internal {
 
 struct ContextMenuItem;
 }  // namespace web_view_internal
 }  // namespace api
 
 // A delegate class of WebViewGuest that are not a part of chrome.
 class WebViewGuestDelegate {
  public :
   virtual ~WebViewGuestDelegate() {}
 
-  typedef std::vector<linked_ptr<api::web_view_internal::ContextMenuItem> >
-      MenuItemVector;
-
   // Called when context menu operation was handled.
   virtual bool HandleContextMenu(const content::ContextMenuParams& params) = 0;
 
   // Called just after additional initialization is performed.
   virtual void OnDidInitialize() = 0;
 
   // Shows the context menu for the guest.
-  // |items| acts as a filter. This restricts the current context's default
-  // menu items to contain only the items from |items|.
-  // |items| == NULL means no filtering will be applied.
-  virtual void OnShowContextMenu(
-      int request_id,
-      const MenuItemVector* items) = 0;
+  virtual void OnShowContextMenu(int request_id) = 0;
 
   // Returns true if the WebViewGuest should handle find requests for its
   // embedder.
   virtual bool ShouldHandleFindRequestsForEmbedder() const = 0;
 
   virtual void SetContextMenuPosition(const gfx::Point& position) = 0;
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_GUEST_VIEW_WEB_VIEW_WEB_VIEW_GUEST_DELEGATE_H_