Disable SitePerProcessBrowserTest.NavigateRemoteFrame for flaky crashing.

content/browser/site_per_process_browsertest.cc

Index: content/browser/site_per_process_browsertest.cc
diff --git a/content/browser/site_per_process_browsertest.cc b/content/browser/site_per_process_browsertest.cc
index d905c9f063ec91d1e3eaa55f379958f6f04567d1..17d22b5de1eafdcb6ca735d4b158ff3662d5e452 100644
--- a/content/browser/site_per_process_browsertest.cc
+++ b/content/browser/site_per_process_browsertest.cc
@@ -346,7 +346,9 @@ IN_PROC_BROWSER_TEST_F(SitePerProcessBrowserTest, CrossSiteIframe) {
       proxy_to_parent->cross_process_frame_connector()->get_view_for_testing());
 }
 
-IN_PROC_BROWSER_TEST_F(SitePerProcessBrowserTest, NavigateRemoteFrame) {
+// Disabled for flaky crashing: crbug.com/446575
+IN_PROC_BROWSER_TEST_F(SitePerProcessBrowserTest,
+                       DISABLED_NavigateRemoteFrame) {
   GURL main_url(embedded_test_server()->GetURL("/site_per_process_main.html"));
   NavigateToURL(shell(), main_url);