PlzNavigate: Triage renderer-initiated failed navigation tests

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

 # These tests currently fail when run with --enable-browser-side-navigation
 # See https://crbug.com/576261
 # before-unload issues
   virtual/pointerevent/fast/events/before-unload-forbidden-navigation.html [ Crash ]
 
 # https://crbug.com/608372: PlzNavigate: support POST navigations
   fast/forms/submit-to-url-fragment.html [ Failure ]
   fast/forms/xss-auditor-doesnt-crash-on-post-submit.html [ Timeout ]
   fast/loader/form-state-restore-with-frames.html [ Failure ]
   http/tests/history/back-to-post.html [ Timeout ]
@@ skipping 103 matching lines @@
 
 # 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 ]
 
+# https://crbug.com/640631: Failing due to difference in WebFrameClient
+# callback sequence on renderer-initiated failed navigations.
+  http/tests/loading/bad-scheme-subframe.html [ Timeout ]
+  http/tests/loading/bad-server-subframe.html [ Failure ]
+  http/tests/loading/text-content-type-with-binary-extension.html [ Timeout Failure ]
+
 # Untriaged navigation
   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 ]
-  http/tests/loading/bad-scheme-subframe.html [ Timeout ]
-  http/tests/loading/bad-server-subframe.html [ Failure ]
   http/tests/loading/doc-write-sync-third-party-script-reload.html [ Failure ]
   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/text-content-type-with-binary-extension.html [ Timeout Failure ]
   http/tests/navigation/forward-to-fragment-fires-onload.html [ Timeout ]
   http/tests/navigation/response204.html [ Timeout ]
 
 # Untriaged security
   http/tests/security/isolatedWorld/bypass-main-world-csp-iframes.html [ Failure ]
   http/tests/security/frame-loading-via-document-write.html [ Crash Crash Pass ]
 
 # Untriaged other
   css3/fonts/font-style-matching-7.html [ Failure ]
   editing/selection/iframe.html [ Failure ]
@@ skipping 384 matching lines @@
   http/tests/streams/readable-streams/tee.html [ Failure ]
   http/tests/streams/readable-streams/templated.html [ Failure ]
   virtual/stable/http/tests/serviceworker/webexposed/global-interface-listing-service-worker.html [ Failure ]
   http/tests/inspector/elements/event-listeners-framework-with-service-worker.html [ Timeout ]
   http/tests/inspector/service-workers/service-worker-manager.html [ Timeout ]
   http/tests/inspector/service-workers/service-workers-view.html [ Timeout ]
   http/tests/security/contentSecurityPolicy/service-worker-allowed.html [ Timeout ]
   http/tests/serviceworker/chromium/resolve-after-window-close.html [ Timeout ]
   http/tests/serviceworker/getregistrations.html [ Timeout ]
   http/tests/serviceworker/foreign-fetch-workers.html [ Failure ]