Convert //chrome/browser/extensions from scoped_ptr to std::unique_ptr

chrome/browser/extensions/api/developer_private/developer_private_mangle.cc

Index: chrome/browser/extensions/api/developer_private/developer_private_mangle.cc
diff --git a/chrome/browser/extensions/api/developer_private/developer_private_mangle.cc b/chrome/browser/extensions/api/developer_private/developer_private_mangle.cc
index 75d64f0a3cd2494e6843e46692647c04a9c41691..a24a327b3c6d379288657c5aa5fcc60d75173a66 100644
--- a/chrome/browser/extensions/api/developer_private/developer_private_mangle.cc
+++ b/chrome/browser/extensions/api/developer_private/developer_private_mangle.cc
@@ -4,7 +4,8 @@
 
 #include "chrome/browser/extensions/api/developer_private/developer_private_mangle.h"
 
-#include "base/memory/scoped_ptr.h"
+#include <memory>
+
 #include "base/values.h"
 #include "chrome/common/extensions/api/developer_private.h"
 #include "extensions/browser/extension_error.h"
@@ -80,14 +81,14 @@ api::developer_private::ItemInfo MangleExtensionInfo(
   }
   for (const api::developer_private::ManifestError& error :
        info.manifest_errors) {
-    scoped_ptr<base::DictionaryValue> value = error.ToValue();
+    std::unique_ptr<base::DictionaryValue> value = error.ToValue();
     value->SetInteger("type", static_cast<int>(ExtensionError::MANIFEST_ERROR));
     value->SetInteger("level", static_cast<int>(logging::LOG_WARNING));
     result.manifest_errors.push_back(std::move(value));
   }
   for (const api::developer_private::RuntimeError& error :
        info.runtime_errors) {
-    scoped_ptr<base::DictionaryValue> value = error.ToValue();
+    std::unique_ptr<base::DictionaryValue> value = error.ToValue();
     value->SetInteger("type", static_cast<int>(ExtensionError::RUNTIME_ERROR));
     logging::LogSeverity severity = logging::LOG_INFO;
     if (error.severity == api::developer_private::ERROR_LEVEL_WARN)