Convert //content from scoped_ptr to std::unique_ptr

content/test/browser_side_navigation_test_utils.h

Index: content/test/browser_side_navigation_test_utils.h
diff --git a/content/test/browser_side_navigation_test_utils.h b/content/test/browser_side_navigation_test_utils.h
index a2daa6e1bd308b88c5f7ffe6d74de9d30d5eacd9..b3d0b13306181eb1de84542b95ea926d6d94374a 100644
--- a/content/test/browser_side_navigation_test_utils.h
+++ b/content/test/browser_side_navigation_test_utils.h
@@ -5,8 +5,9 @@
 #ifndef CONTENT_TEST_BROWSER_SIDE_NAVIGATION_TEST_UTILS_H_
 #define CONTENT_TEST_BROWSER_SIDE_NAVIGATION_TEST_UTILS_H_
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 
 namespace content {
 
@@ -24,7 +25,7 @@ void BrowserSideNavigationTearDown();
 
 // Returns an empty stream. Used when faking a navigation commit notification
 // from the IO thread with a TestNavigationURLLoader.
-scoped_ptr<StreamHandle> MakeEmptyStream();
+std::unique_ptr<StreamHandle> MakeEmptyStream();
 
 // If a test needs to run with browser side navigation enabled, call this
 // function before doing any setup. In particular, for tests inheriting from