Add full support for filesystem URLs.

chrome/common/extensions/extension_manifests_unittest.cc

 // 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.
 
 #include "chrome/common/extensions/extension.h"
 
 #if defined(TOOLKIT_GTK)
 #include <gtk/gtk.h>
 #endif
 
@@ skipping 823 matching lines @@
       errors::kInvalidFileFiltersList);
   LoadAndExpectError("filebrowser_invalid_file_filters_2.json",
       ExtensionErrorUtils::FormatErrorMessage(
           errors::kInvalidFileFilterValue, base::IntToString(0)));
   LoadAndExpectError("filebrowser_invalid_file_filters_url.json",
       ExtensionErrorUtils::FormatErrorMessage(errors::kInvalidURLPatternError,
                                               "http:*.html"));
 
   scoped_refptr<Extension> extension(
       LoadAndExpectSuccess("filebrowser_valid.json"));
+  ASSERT_TRUE(extension.get());
   ASSERT_TRUE(extension->file_browser_handlers() != NULL);
   ASSERT_EQ(extension->file_browser_handlers()->size(), 1U);
   const FileBrowserHandler* action =
       extension->file_browser_handlers()->at(0).get();
   EXPECT_EQ(action->title(), "Default title");
   EXPECT_EQ(action->icon_path(), "icon.png");
   const URLPatternSet& patterns = action->file_url_patterns();
   ASSERT_EQ(patterns.patterns().size(), 1U);
   ASSERT_TRUE(action->MatchesURL(
       GURL("filesystem:chrome-extension://foo/local/test.txt")));
@@ skipping 124 matching lines @@
   EXPECT_EQ("", extension->page_action()->id());
   EXPECT_EQ(0u, extension->page_action()->icon_paths()->size());
   EXPECT_EQ("", extension->page_action()->GetTitle(
       ExtensionAction::kDefaultTabId));
   EXPECT_FALSE(extension->page_action()->HasPopup(
       ExtensionAction::kDefaultTabId));
 
   LoadAndExpectError("page_action_manifest_version_2b.json",
                      errors::kInvalidPageActionPopup);
 }