Update site-per-process layout test filter.

third_party/WebKit/LayoutTests/FlagExpectations/site-per-process

Index: third_party/WebKit/LayoutTests/FlagExpectations/site-per-process
diff --git a/third_party/WebKit/LayoutTests/FlagExpectations/site-per-process b/third_party/WebKit/LayoutTests/FlagExpectations/site-per-process
index 55009643206fd27a97139d3aad0716d5c6e77d12..a5dfe697539f3ed31299c2e1771c406ef6cae2b3 100644
--- a/third_party/WebKit/LayoutTests/FlagExpectations/site-per-process
+++ b/third_party/WebKit/LayoutTests/FlagExpectations/site-per-process
@@ -4,10 +4,6 @@
 # https://crbug.com/611838 - regression when geolocation tests use JS mock.
 http/tests/security/powerfulFeatureRestrictions/geolocation-on-secure-origin-in-insecure-origin.html [ Timeout ]
 
-# https://crbug.com/611154 - DCHECK in NavigatorImpl::DidStartProvisionalLoad.
-http/tests/security/upgrade-insecure-requests/iframe-upgrade.https.html [ Crash ]
-http/tests/security/upgrade-insecure-requests/iframe-upgrade-csp.https.html [ Crash ]
-
 # https://crbug.com/582494 - [sigsegv / av] blink::Document::styleEngine.
 http/tests/security/mixedContent/insecure-plugin-in-iframe.html [ Crash ]