[MD Extensions] Include the manifest code snippet in load errors

chrome/test/data/webui/extensions/cr_extensions_browsertest.js

Index: chrome/test/data/webui/extensions/cr_extensions_browsertest.js
diff --git a/chrome/test/data/webui/extensions/cr_extensions_browsertest.js b/chrome/test/data/webui/extensions/cr_extensions_browsertest.js
index 208d344a5eebed62e9cc88f1209cc9c6692af29a..a7a3ab730708f89391d78ff5556069672556aea5 100644
--- a/chrome/test/data/webui/extensions/cr_extensions_browsertest.js
+++ b/chrome/test/data/webui/extensions/cr_extensions_browsertest.js
@@ -202,6 +202,12 @@ TEST_F('CrExtensionsBrowserTest', 'ExtensionLoadErrorInteractionTest',
   mocha.grep(assert(extension_load_error_tests.TestNames.Interaction)).run();
 });
 
+TEST_F('CrExtensionsBrowserTest', 'ExtensionLoadErrorCodeSectionTest',
+       function() {
+  extension_load_error_tests.registerTests();
+  mocha.grep(assert(extension_load_error_tests.TestNames.CodeSection)).run();
+});
+
 ////////////////////////////////////////////////////////////////////////////////
 // Extension Service Tests