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

content/public/test/content_browser_test_utils.h

Index: content/public/test/content_browser_test_utils.h
diff --git a/content/public/test/content_browser_test_utils.h b/content/public/test/content_browser_test_utils.h
index 8c6d7bdc364467f5f1bbee8fb989eea1f23aa7e6..b3c5585b7b49f6aea838acbb157640a04150dc2f 100644
--- a/content/public/test/content_browser_test_utils.h
+++ b/content/public/test/content_browser_test_utils.h
@@ -25,6 +25,7 @@ class Rect;
 namespace content {
 
 class MessageLoopRunner;
+class FrameTreeNode;
 class Shell;
 
 // Generate the file path for testing a particular test.
@@ -47,6 +48,10 @@ void LoadDataWithBaseURL(Shell* window,
                          const std::string data,
                          const GURL& base_url);
 
+// Navigates the frame represented by |node| to |url|, blocking until the
+// navigation finishes.
+void NavigateFrameToURL(FrameTreeNode* node, const GURL& url);
+
 // Navigates the selected tab of |window| to |url|, blocking until the given
 // number of navigations finishes.
 void NavigateToURLBlockUntilNavigationsComplete(Shell* window,