Display the extension id and name when its installation is refused by policy.

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 32f14b84446620326a5488ff4fcffcfbebc29b31..d3262db03f479be6a2bb708d4153ec717b8973c0 100644
--- a/chrome/browser/extensions/crx_installer.cc
+++ b/chrome/browser/extensions/crx_installer.cc
@@ -350,8 +350,10 @@ void CrxInstaller::ConfirmInstall() {
 
   if (!frontend_weak_->extension_prefs()->IsExtensionAllowedByPolicy(
           extension_->id(), install_source_)) {
-    ReportFailureFromUIThread(
-        l10n_util::GetStringUTF16(IDS_EXTENSION_CANT_INSTALL_POLICY_BLACKLIST));
+    ReportFailureFromUIThread(l10n_util::GetStringFUTF16(
+        IDS_EXTENSION_CANT_INSTALL_POLICY_BLACKLIST,
+        UTF8ToUTF16(extension_->name()),
+        UTF8ToUTF16(extension_->id())));
     return;
   }