Split mode incognito extension can get misleading pref changed events from regular mode

chrome/browser/extensions/extension_prefs.cc

Index: chrome/browser/extensions/extension_prefs.cc
diff --git a/chrome/browser/extensions/extension_prefs.cc b/chrome/browser/extensions/extension_prefs.cc
index 93378302def373cecd331cdd8b81de8a2f99dba4..741ca44704090b1e1a08300c0c78ab50c15cff68 100644
--- a/chrome/browser/extensions/extension_prefs.cc
+++ b/chrome/browser/extensions/extension_prefs.cc
@@ -1816,6 +1816,18 @@ bool ExtensionPrefs::DoesExtensionControlPref(const std::string& extension_id,
                                                              incognito);
 }
 
+bool ExtensionPrefs::DoesExtensionControlIncognitoPref(
+    const std::string& extension_id,
+    const std::string& pref_key) {
+  DCHECK(pref_service()->FindPreference(pref_key.c_str()))
+      << "Extension controlled preference key " << pref_key
+      << " not registered.";
+
+  return extension_pref_value_map_->DoesExtensionControlIncognitoPref(
+      extension_id,
+      pref_key);
+}
+
 bool ExtensionPrefs::HasIncognitoPrefValue(const std::string& pref_key) {
   bool has_incognito_pref_value = false;
   extension_pref_value_map_->GetEffectivePrefValue(pref_key,