Extract debugger target enumeration into a separate class

chrome/browser/extensions/extension_service.cc

Index: chrome/browser/extensions/extension_service.cc
diff --git a/chrome/browser/extensions/extension_service.cc b/chrome/browser/extensions/extension_service.cc
index 2c2156b00c2cea9df5faba33b993711eb96ae9ed..688e75279fcbdd1d93bbdd00765706d2b8cf406b 100644
--- a/chrome/browser/extensions/extension_service.cc
+++ b/chrome/browser/extensions/extension_service.cc
@@ -733,9 +733,9 @@ void ExtensionService::ReloadExtensionWithEvents(
         manager->GetBackgroundHostForExtension(extension_id);
     if (host && DevToolsAgentHost::HasFor(host->render_view_host())) {
       // Look for an open inspector for the background page.
-      int devtools_cookie = DevToolsAgentHost::DisconnectRenderViewHost(
+      std::string devtools_cookie = DevToolsAgentHost::DisconnectRenderViewHost(
           host->render_view_host());
-      if (devtools_cookie >= 0)
+      if (devtools_cookie != DevToolsAgentHost::NullId)
         orphaned_dev_tools_[extension_id] = devtools_cookie;
     }