Fix for ERROR:url_pattern_set.cc(240)] Invalid url pattern: chrome://print/*

chrome/browser/extensions/test_extension_prefs.h

Index: chrome/browser/extensions/test_extension_prefs.h
diff --git a/chrome/browser/extensions/test_extension_prefs.h b/chrome/browser/extensions/test_extension_prefs.h
index b451b715ab5d4a385e418d7e2a8d00114fbbfaec..5d0bfa95ab26fafafca02307f90a97cdeb658150 100644
--- a/chrome/browser/extensions/test_extension_prefs.h
+++ b/chrome/browser/extensions/test_extension_prefs.h
@@ -61,6 +61,12 @@ class TestExtensionPrefs {
   // As above, but the extension is an app.
   scoped_refptr<Extension> AddApp(const std::string& name);
 
+  // Creates a new Extension with the given name in our temp dir with
+  // Manifest::Location, adds it to our ExtensionPrefs, and returns it.
+  scoped_refptr<Extension> AddExtensionWithManifestLocation(
+      const std::string& name,
+      Manifest::Location location);
+
   // Similar to AddExtension, but takes a dictionary with manifest values.
   scoped_refptr<Extension> AddExtensionWithManifest(
       const base::DictionaryValue& manifest,