Some linked_ptr -> unique_ptr conversion in extensions/browser.

extensions/browser/updater/request_queue.h

Index: extensions/browser/updater/request_queue.h
diff --git a/extensions/browser/updater/request_queue.h b/extensions/browser/updater/request_queue.h
index 1b9c5a45a6551de43efa876de74552246af83c52..5b11468246a65668199927eebf6acdae2bc9dead 100644
--- a/extensions/browser/updater/request_queue.h
+++ b/extensions/browser/updater/request_queue.h
@@ -12,7 +12,6 @@
 #include <utility>
 
 #include "base/callback.h"
-#include "base/memory/linked_ptr.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "net/base/backoff_entry.h"
@@ -85,8 +84,8 @@ class RequestQueue {
   struct Request {
     Request(net::BackoffEntry* backoff_entry, T* request)
         : backoff_entry(backoff_entry), request(request) {}
-    linked_ptr<net::BackoffEntry> backoff_entry;
-    linked_ptr<T> request;
+    std::unique_ptr<net::BackoffEntry> backoff_entry;
+    std::unique_ptr<T> request;
   };
 
   // Compares the release time of two pending requests.