Remove linked_ptr usage in //base.

extensions/browser/guest_view/web_view/web_view_guest_delegate.h

Index: extensions/browser/guest_view/web_view/web_view_guest_delegate.h
diff --git a/extensions/browser/guest_view/web_view/web_view_guest_delegate.h b/extensions/browser/guest_view/web_view/web_view_guest_delegate.h
index afee25935e2da120b42024de48a9920f8adc9adf..e0c33c1a774dbe354aba8705bc22f4e6e5b64b6e 100644
--- a/extensions/browser/guest_view/web_view/web_view_guest_delegate.h
+++ b/extensions/browser/guest_view/web_view/web_view_guest_delegate.h
@@ -6,6 +6,7 @@
 #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 {
@@ -29,9 +30,6 @@ 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;
 
@@ -39,12 +37,7 @@ class WebViewGuestDelegate {
   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.