Disable RaceCrossOriginNavigationAndSamePageHistoryNavigation due to flakiness.

content/browser/frame_host/navigation_controller_impl_browsertest.cc

Index: content/browser/frame_host/navigation_controller_impl_browsertest.cc
diff --git a/content/browser/frame_host/navigation_controller_impl_browsertest.cc b/content/browser/frame_host/navigation_controller_impl_browsertest.cc
index d1a5a7dd3ddac5ec79ab07b253249d1c81e3e410..cb5990daa5b779133e461d72f133aa87c11b3a9d 100644
--- a/content/browser/frame_host/navigation_controller_impl_browsertest.cc
+++ b/content/browser/frame_host/navigation_controller_impl_browsertest.cc
@@ -5927,8 +5927,11 @@ class CommitMessageFilter : public BrowserMessageFilter {
 // the cross-origin navigation and updates the URL, but not the origin of the
 // document. This results in mismatch between the two and causes the renderer
 // process to be killed. See https://crbug.com/630103.
-IN_PROC_BROWSER_TEST_F(NavigationControllerBrowserTest,
-                       RaceCrossOriginNavigationAndSamePageHistoryNavigation) {
+// TODO(nasko): Investigate why this test is flaky, likely related to
+// https://crbug.com/638089, and enable once resolved.
+IN_PROC_BROWSER_TEST_F(
+    NavigationControllerBrowserTest,
+    DISABLED_RaceCrossOriginNavigationAndSamePageHistoryNavigation) {
   WebContentsImpl* web_contents =
       static_cast<WebContentsImpl*>(shell()->web_contents());