Revert of Remove ScopedVector in components/spellcheck

components/spellcheck/browser/feedback_sender.h

Index: components/spellcheck/browser/feedback_sender.h
diff --git a/components/spellcheck/browser/feedback_sender.h b/components/spellcheck/browser/feedback_sender.h
index fa36c8ae347107b09cbcd212be83e828c77de567..f97b674a40e4202551317bbdbeaae76796aa844a 100644
--- a/components/spellcheck/browser/feedback_sender.h
+++ b/components/spellcheck/browser/feedback_sender.h
@@ -23,6 +23,7 @@
 #include <vector>
 
 #include "base/macros.h"
+#include "base/memory/scoped_vector.h"
 #include "base/memory/weak_ptr.h"
 #include "base/timer/timer.h"
 #include "components/spellcheck/browser/feedback.h"
@@ -185,7 +186,7 @@
   // Feedback senders that need to stay alive for the duration of sending data.
   // If a sender is destroyed before it finishes, then sending feedback will be
   // canceled.
-  std::vector<std::unique_ptr<net::URLFetcher>> senders_;
+  ScopedVector<net::URLFetcher> senders_;
 
   DISALLOW_COPY_AND_ASSIGN(FeedbackSender);
 };