Refactoring: de-couple Extensions from "script injection System" [render side]:4

extensions/renderer/user_script_set.cc

Index: extensions/renderer/user_script_set.cc
diff --git a/extensions/renderer/user_script_set.cc b/extensions/renderer/user_script_set.cc
index df7c7c954d5249eed7dbabeceafaa27c080c4c68..f82465d6f1992e70edfedc53266935839c07b5ba 100644
--- a/extensions/renderer/user_script_set.cc
+++ b/extensions/renderer/user_script_set.cc
@@ -85,9 +85,8 @@ void UserScriptSet::GetInjections(
   }
 }
 
-bool UserScriptSet::UpdateUserScripts(
-    base::SharedMemoryHandle shared_memory,
-    const std::set<std::string>& changed_extensions) {
+bool UserScriptSet::UpdateUserScripts(base::SharedMemoryHandle shared_memory,
+                                      const std::set<HostID>& changed_hosts) {
   bool only_inject_incognito =
       ExtensionsRendererClient::Get()->IsIncognitoProcess();
 
@@ -146,7 +145,7 @@ bool UserScriptSet::UpdateUserScripts(
 
   FOR_EACH_OBSERVER(Observer,
                     observers_,
-                    OnUserScriptsUpdated(changed_extensions, scripts_.get()));
+                    OnUserScriptsUpdated(changed_hosts, scripts_.get()));
   return true;
 }