Remove last usages of ScopedVector in extensions/

chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_apitest.cc

Index: chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_apitest.cc
diff --git a/chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_apitest.cc b/chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_apitest.cc
index 67825a16d220381975abf104cd84322bab43cec6..4b785c2a787d5df4c4d1895cdac8c1d6a702927b 100644
--- a/chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_apitest.cc
+++ b/chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_apitest.cc
@@ -7,7 +7,6 @@
 
 #include "base/files/file.h"
 #include "base/macros.h"
-#include "base/memory/scoped_vector.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/time/time.h"
 #include "chrome/browser/browser_process.h"
@@ -110,7 +109,7 @@ class AbortOnUnresponsivePerformer : public Observer {
 
  private:
   Service* service_;  // Not owned.
-  ScopedVector<NotificationButtonClicker> clickers_;
+  std::vector<std::unique_ptr<NotificationButtonClicker>> clickers_;
   DISALLOW_COPY_AND_ASSIGN(AbortOnUnresponsivePerformer);
 };