[devtools] Disable layout test for landing devtools changes

TBR=yangguo@chromium.org

Bug: chromium:1030746
Change-Id: Ie9a933d7ae5423429ad46e2ed533c6ea794b9705
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2002522
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#732417}

third_party/blink/web_tests/TestExpectations

@@ -6383,6 +6383,7 @@ crbug.com/1041451 virtual/gpu-rasterization-disable-yuv/images/yuv-decode-eligib
 
 # Disabled for landing devtools changes
 crbug.com/1030746 http/tests/devtools/sources/debugger-ui/sourcemap-src-not-loaded.js [ Pass Failure ]
+crbug.com/1030746 http/tests/devtools/network/load-resource-for-frontend.js [ Pass Failure ]
 
 # Disable for landing devtools changes
 crbug.com/1006759 http/tests/devtools/console/argument-hints.js [ Pass Failure ]