Add ErrorConsole UI for Extension Install Warnings

chrome/browser/resources/extensions/extensions.js

Index: chrome/browser/resources/extensions/extensions.js
diff --git a/chrome/browser/resources/extensions/extensions.js b/chrome/browser/resources/extensions/extensions.js
index f07af56ad5e550082d9be41af3b247a7c967388b..1bd644ed411f4a91759577b2ba2102d513d8615e 100644
--- a/chrome/browser/resources/extensions/extensions.js
+++ b/chrome/browser/resources/extensions/extensions.js
@@ -7,6 +7,7 @@
 <include src="extension_focus_manager.js"></include>
 <include src="extension_list.js"></include>
 <include src="pack_extension_overlay.js"></include>
+<include src="extension_error_overlay.js"></include>
 
 <if expr="pp_ifdef('chromeos')">
 <include src="chromeos/kiosk_apps.js"></include>
@@ -133,6 +134,10 @@ cr.define('extensions', function() {
           extensions.ExtensionCommandsOverlay.getInstance();
       extensionCommandsOverlay.initializePage();
 
+      var extensionErrorOverlay =
+          extensions.ExtensionErrorOverlay.getInstance();
+      extensionErrorOverlay.initializePage();
+
       // Initialize the kiosk overlay.
       if (cr.isChromeOS) {
         var kioskOverlay = extensions.KioskAppsOverlay.getInstance();