Use EnablePlayStoreAppSearch feature flag.

ui/app_list/app_list_features.cc

Index: ui/app_list/app_list_features.cc
diff --git a/ui/app_list/app_list_features.cc b/ui/app_list/app_list_features.cc
index eec8b5727302538d23987c4ed240d72e28b63db4..4ded82d2e9dc0176698f3114ffa6bbf1ae0a17f1 100644
--- a/ui/app_list/app_list_features.cc
+++ b/ui/app_list/app_list_features.cc
@@ -16,8 +16,8 @@ const base::Feature kEnableAnswerCardDarkRun{"EnableAnswerCardDarkRun",
                                              base::FEATURE_DISABLED_BY_DEFAULT};
 const base::Feature kEnableFullscreenAppList{"EnableFullscreenAppList",
                                              base::FEATURE_DISABLED_BY_DEFAULT};
-const base::Feature kEnablePlaystoreAppSearch{
-    "EnablePlaystoreAppSearch", base::FEATURE_DISABLED_BY_DEFAULT};
+const base::Feature kEnablePlayStoreAppSearch{
+    "EnablePlayStoreAppSearch", base::FEATURE_DISABLED_BY_DEFAULT};
 
 bool IsAnswerCardEnabled() {
   static const bool enabled = base::FeatureList::IsEnabled(kEnableAnswerCard);
@@ -40,9 +40,9 @@ bool IsSearchResultsNewDesignEnabled() {
          (IsAnswerCardEnabled() && !IsAnswerCardDarkRunEnabled());
 }
 
-bool IsPlaystoreAppSearchEnabled() {
+bool IsPlayStoreAppSearchEnabled() {
   static const bool enabled =
-      base::FeatureList::IsEnabled(kEnablePlaystoreAppSearch);
+      base::FeatureList::IsEnabled(kEnablePlayStoreAppSearch);
   return enabled;
 }