Remove NOTIFICATION_NO_THEME_DETECTED; it is not observed after r107527.

chrome/browser/extensions/crx_installer.cc

Index: chrome/browser/extensions/crx_installer.cc
diff --git a/chrome/browser/extensions/crx_installer.cc b/chrome/browser/extensions/crx_installer.cc
index a80d1e094b9c4f5a188768b9b9a1179e49fcbe93..40f73f1c3df8150f36021eb5cbc742f9613828b1 100644
--- a/chrome/browser/extensions/crx_installer.cc
+++ b/chrome/browser/extensions/crx_installer.cc
@@ -560,13 +560,6 @@ void CrxInstaller::InstallUIAbort(bool user_initiated) {
     ExtensionService::RecordPermissionMessagesHistogram(
         extension(), histogram_name.c_str());
 
-    // Kill the theme loading bubble.
-    content::NotificationService* service =
-        content::NotificationService::current();
-    service->Notify(chrome::NOTIFICATION_NO_THEME_DETECTED,
-                    content::Source<CrxInstaller>(this),
-                    content::NotificationService::NoDetails());
-
     NotifyCrxInstallComplete(false);
   }