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

chrome/browser/extensions/extension_override_apitest.cc

Index: chrome/browser/extensions/extension_override_apitest.cc
diff --git a/chrome/browser/extensions/extension_override_apitest.cc b/chrome/browser/extensions/extension_override_apitest.cc
index 882bde5a2f05a3910d5bfcbe313e9fdb13796593..96eee9e1696920d56fd71a29894870e6942ef573 100644
--- a/chrome/browser/extensions/extension_override_apitest.cc
+++ b/chrome/browser/extensions/extension_override_apitest.cc
@@ -235,7 +235,7 @@ IN_PROC_BROWSER_TEST_F(ExtensionOverrideTest, ShouldCleanUpDuplicateEntries) {
   // the file already contains dupes when an extension is loaded.
   base::ListValue* list = new base::ListValue();
   for (size_t i = 0; i < 3; ++i) {
-    scoped_ptr<base::DictionaryValue> dict(new base::DictionaryValue());
+    std::unique_ptr<base::DictionaryValue> dict(new base::DictionaryValue());
     dict->SetString("entry", "http://www.google.com/");
     dict->SetBoolean("active", true);
     list->Append(std::move(dict));