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

chrome/browser/extensions/test_extension_prefs.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_TEST_EXTENSION_PREFS_H_
 #define CHROME_BROWSER_EXTENSIONS_TEST_EXTENSION_PREFS_H_
 
 #include <string>
 
 #include "base/files/scoped_temp_dir.h"
@@ skipping 43 matching lines @@
   // any existing backing file we had previously created.
   void RecreateExtensionPrefs();
 
   // Creates a new Extension with the given name in our temp dir, adds it to
   // our ExtensionPrefs, and returns it.
   scoped_refptr<Extension> AddExtension(const std::string& name);
 
   // 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,
       Manifest::Location location);
 
   // Similar to AddExtension, but takes a dictionary with manifest values
   // and extension flags.
   scoped_refptr<Extension> AddExtensionWithManifestAndFlags(
       const base::DictionaryValue& manifest,
       Manifest::Location location,
@@ skipping 21 matching lines @@
   const scoped_refptr<base::SequencedTaskRunner> task_runner_;
 
  private:
   bool extensions_disabled_;
   DISALLOW_COPY_AND_ASSIGN(TestExtensionPrefs);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_TEST_EXTENSION_PREFS_H_