Improve UI for unpacked extensions failing to load

chrome/browser/resources/extensions/extensions.html

Index: chrome/browser/resources/extensions/extensions.html
diff --git a/chrome/browser/resources/extensions/extensions.html b/chrome/browser/resources/extensions/extensions.html
index 4bb9a1252e7c625eea5c8f6441cca6369253fc69..479cf4222b7281315a98fa570e9aaa676551864b 100644
--- a/chrome/browser/resources/extensions/extensions.html
+++ b/chrome/browser/resources/extensions/extensions.html
@@ -7,6 +7,7 @@
 <link rel="stylesheet" href="extension_commands_overlay.css">
 <link rel="stylesheet" href="extension_error.css">
 <link rel="stylesheet" href="extension_error_overlay.css">
+<link rel="stylesheet" href="extension_load_error.css">
 <link rel="stylesheet" href="pack_extension_overlay.css">
 <link rel="stylesheet" href="chrome://resources/css/alert_overlay.css">
 <link rel="stylesheet" href="chrome://resources/css/chrome_shared.css">
@@ -100,6 +101,7 @@
       </div>
     </div>
   </div>
+  <include src="extension_load_error.html">
   <div id="extension-settings-list" class="empty-extension-list"></div>
   <div id="no-extensions">
     <span id="no-extensions-message"
@@ -230,6 +232,7 @@
 
   <include src="../../../../ui/webui/resources/html/trash.html">
   <include src="extension_error.html">
+  <include src="extension_load_error.html">
 
 </div>