Convert //content/browser from scoped_ptr to std::unique_ptr

content/browser/net/quota_policy_cookie_store_unittest.cc

Index: content/browser/net/quota_policy_cookie_store_unittest.cc
diff --git a/content/browser/net/quota_policy_cookie_store_unittest.cc b/content/browser/net/quota_policy_cookie_store_unittest.cc
index 01db50f9b3d6fc4048fb5a516bcabcd55d8a4b15..3fb8a5b7e8428fb97e4d4c8a23a4e85a9544a7f0 100644
--- a/content/browser/net/quota_policy_cookie_store_unittest.cc
+++ b/content/browser/net/quota_policy_cookie_store_unittest.cc
@@ -121,7 +121,7 @@ class QuotaPolicyCookieStoreTest : public testing::Test {
   }
 
   TestBrowserThreadBundle bundle_;
-  scoped_ptr<base::SequencedWorkerPoolOwner> pool_owner_;
+  std::unique_ptr<base::SequencedWorkerPoolOwner> pool_owner_;
   base::WaitableEvent loaded_event_;
   base::WaitableEvent destroy_event_;
   base::ScopedTempDir temp_dir_;