Perform navigation policy check on UI thread for --site-per-process.

content/test/content_browser_test_utils_internal.h

+// Copyright 2014 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 CONTENT_TEST_CONTENT_BROWSER_TEST_UTILS_INTERNAL_H_
+#define CONTENT_TEST_CONTENT_BROWSER_TEST_UTILS_INTERNAL_H_
+
+// A collections of functions designed for use with content_shell based browser
+// tests internal to the content/ module.
+// Note: If a function here also works with browser_tests, it should be in
+// the content public API.
+
+class GURL;
+
+namespace content {
+
+class FrameTreeNode;
+
+// Navigates the frame represented by |node| to |url|, blocking until the
+// navigation finishes.
+void NavigateFrameToURL(FrameTreeNode* node, const GURL& url);
+
+}  // namespace content
+
+#endif  // CONTENT_TEST_CONTENT_BROWSER_TEST_UTILS_INTERNAL_H_