Remove dead script_badge code.

chrome/browser/ui/cocoa/extensions/extension_popup_controller.mm

Index: chrome/browser/ui/cocoa/extensions/extension_popup_controller.mm
diff --git a/chrome/browser/ui/cocoa/extensions/extension_popup_controller.mm b/chrome/browser/ui/cocoa/extensions/extension_popup_controller.mm
index 3004f2ded899c1183eeee37f44bab18c4bc4ef37..5ff6f188bb677cceb2e904aab74dbef38a3f8199 100644
--- a/chrome/browser/ui/cocoa/extensions/extension_popup_controller.mm
+++ b/chrome/browser/ui/cocoa/extensions/extension_popup_controller.mm
@@ -285,9 +285,6 @@ class DevtoolsNotificationBridge : public content::NotificationObserver {
   // Make Mac behavior the same with Windows and others.
   if (gPopup) {
     std::string extension_id = url.host();
-    if (url.SchemeIs(content::kChromeUIScheme) &&
-        url.host() == chrome::kChromeUIExtensionInfoHost)
-      extension_id = url.path().substr(1);
     extensions::ExtensionViewHost* host = [gPopup extensionViewHost];
     if (extension_id == host->extension_id()) {
       [gPopup close];