Revert of Change base::Value::ListStorage to std::vector<base::Value>

chrome/browser/chromeos/extensions/quick_unlock_private/quick_unlock_private_api_unittest.cc

Index: chrome/browser/chromeos/extensions/quick_unlock_private/quick_unlock_private_api_unittest.cc
diff --git a/chrome/browser/chromeos/extensions/quick_unlock_private/quick_unlock_private_api_unittest.cc b/chrome/browser/chromeos/extensions/quick_unlock_private/quick_unlock_private_api_unittest.cc
index a249299a36d1757967f5e55024ab0d4267c657ab..20013f9ef37f015fb3eea040f98b56f9baefca09 100644
--- a/chrome/browser/chromeos/extensions/quick_unlock_private/quick_unlock_private_api_unittest.cc
+++ b/chrome/browser/chromeos/extensions/quick_unlock_private/quick_unlock_private_api_unittest.cc
@@ -114,9 +114,10 @@
 
     base::ListValue* list = nullptr;
     EXPECT_TRUE(result->GetAsList(&list));
-    for (const base::Value& value : *list) {
+    // Consume the unique_ptr by reference so we don't take ownership.
+    for (const std::unique_ptr<base::Value>& value : (*list)) {
       std::string mode;
-      EXPECT_TRUE(value.GetAsString(&mode));
+      EXPECT_TRUE(value->GetAsString(&mode));
       modes.push_back(quick_unlock_private::ParseQuickUnlockMode(mode));
     }
 
@@ -133,9 +134,9 @@
 
     base::ListValue* list = nullptr;
     EXPECT_TRUE(result->GetAsList(&list));
-    for (const base::Value& value : *list) {
+    for (const std::unique_ptr<base::Value>& value : *list) {
       std::string mode;
-      EXPECT_TRUE(value.GetAsString(&mode));
+      EXPECT_TRUE(value->GetAsString(&mode));
       modes.push_back(quick_unlock_private::ParseQuickUnlockMode(mode));
     }