Blank UI for web component tests.

chrome/browser/ui/webui/web_component_test_ui.h

Index: chrome/browser/ui/webui/web_component_test_ui.h
diff --git a/chrome/browser/ui/webui/web_component_test_ui.h b/chrome/browser/ui/webui/web_component_test_ui.h
new file mode 100644
index 0000000000000000000000000000000000000000..0c479bc657810366791af6251c804d9e7d5612fb
--- /dev/null
+++ b/chrome/browser/ui/webui/web_component_test_ui.h
@@ -0,0 +1,20 @@
+// Copyright 2015 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_UI_WEBUI_WEB_COMPONENT_TEST_UI_H_
+#define CHROME_BROWSER_UI_WEBUI_WEB_COMPONENT_TEST_UI_H_
+
+#include "content/public/browser/web_ui_controller.h"
+
+// This class serves as a target for JavaScript browser tests, allowing tests to
+// reference local chrome:// resources.
+class WebComponentTestUI : public content::WebUIController {
+ public:
+  explicit WebComponentTestUI(content::WebUI* web_ui);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(WebComponentTestUI);
+};
+
+#endif  // CHROME_BROWSER_UI_WEBUI_WEB_COMPONENT_TEST_UI_H_