PlzNavigate: Triage tests failing due to flipped WebFrameClient callbacks

third_party/WebKit/LayoutTests/FlagExpectations/enable-browser-side-navigation

Index: third_party/WebKit/LayoutTests/FlagExpectations/enable-browser-side-navigation
diff --git a/third_party/WebKit/LayoutTests/FlagExpectations/enable-browser-side-navigation b/third_party/WebKit/LayoutTests/FlagExpectations/enable-browser-side-navigation
index 67144472426542197c3883d56ceea86170bc6f15..ae9a343b8cf70c5b4f3dc192bce67a317f58cace 100644
--- a/third_party/WebKit/LayoutTests/FlagExpectations/enable-browser-side-navigation
+++ b/third_party/WebKit/LayoutTests/FlagExpectations/enable-browser-side-navigation
@@ -114,9 +114,17 @@
   http/tests/security/upgrade-insecure-requests/iframe-upgrade.https.html [ Missing Timeout Timeout Timeout ]
   http/tests/security/w3c/cross-origin-objects.html [ Crash Timeout Failure ]
 
+# https://crbug.com/638900: Failing due to flipped order of callbacks to
+# WebFrameClient::didStartProvisionalLoad() and
+# WebFrameClient::didFinishDocumentLoad().
+  fast/loader/subframe-removes-itself.html [ Failure ]
+  http/tests/loading/redirect-with-no-location-crash.html [ Failure ]
+  http/tests/loading/slow-parsing-subframe.html [ Failure ]
+  http/tests/navigation/cross-origin-fragment-navigation-is-async.html [ Failure ]
+  http/tests/navigation/same-origin-fragment-navigation-is-sync.html [ Failure ]
+
 # Untriaged navigation
   fast/loader/document-destruction-within-unload.html [ Crash ]
-  fast/loader/subframe-removes-itself.html [ Failure ]
   http/tests/cookies/same-site/popup-same-site-post.html [ Failure ]
   http/tests/cookies/same-site/popup-same-site.html [ Failure ]
   http/tests/loading/307-after-303-after-post.html [ Failure ]
@@ -126,13 +134,9 @@
   http/tests/loading/pdf-commit-load-callbacks.html [ Crash ]
   http/tests/loading/promote-img-in-viewport-priority.html [ Failure ]
   http/tests/loading/redirect-methods.html [ Crash Failure ]
-  http/tests/loading/redirect-with-no-location-crash.html [ Failure ]
-  http/tests/loading/slow-parsing-subframe.html [ Failure ]
   http/tests/loading/text-content-type-with-binary-extension.html [ Timeout Failure ]
-  http/tests/navigation/cross-origin-fragment-navigation-is-async.html [ Failure ]
   http/tests/navigation/forward-to-fragment-fires-onload.html [ Timeout ]
   http/tests/navigation/response204.html [ Timeout ]
-  http/tests/navigation/same-origin-fragment-navigation-is-sync.html [ Failure ]
 
 # Untriaged security
   http/tests/security/isolatedWorld/bypass-main-world-csp-iframes.html [ Failure ]