Convert //components/update_client from scoped_ptr to std::unique_ptr

BUG=554298
[email protected]

Review URL: https://codereview.chromium.org/1911083002

Cr-Commit-Position: refs/heads/master@{#389160}
diff --git a/components/update_client/component_patcher_unittest.h b/components/update_client/component_patcher_unittest.h
index 8b3a797..a3b70f2 100644
--- a/components/update_client/component_patcher_unittest.h
+++ b/components/update_client/component_patcher_unittest.h
@@ -5,9 +5,10 @@
 #ifndef COMPONENTS_UPDATE_CLIENT_COMPONENT_PATCHER_UNITTEST_H_
 #define COMPONENTS_UPDATE_CLIENT_COMPONENT_PATCHER_UNITTEST_H_
 
+#include <memory>
+
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "courgette/courgette.h"
 #include "courgette/third_party/bsdiff.h"