Test for the fix for history.replaceState navigations submitted earlier.

content/test/data/overscroll_navigation.html

Index: content/test/data/overscroll_navigation.html
diff --git a/content/test/data/overscroll_navigation.html b/content/test/data/overscroll_navigation.html
index 4bde51bfa953cbb515b6bd85af716285166eeb05..59754b7bfd6f4eae6e2294d4e104bf7a885c8a42 100644
--- a/content/test/data/overscroll_navigation.html
+++ b/content/test/data/overscroll_navigation.html
@@ -57,6 +57,10 @@ function uninstall_touch_handler() {
   document.removeEventListener('touchstart', touch_start_handler);
 }
 
+function use_replace_state() {
+  window.history.replaceState({}, 'foo');
+}
+
 onload = function() {
   window.onhashchange = function() {
     document.title = "Title: " + location.hash;