Disable loading.desktop/Elmundo_warm on all platforms

Bug:867836
Change-Id: I8fb770d92f6a87bc3a69e56d019341d58e7781b0
TBR=kouhei@chromium.org, ksakamoto@chromium.org

NOTRY=true

Change-Id: I8fb770d92f6a87bc3a69e56d019341d58e7781b0
Reviewed-on: https://chromium-review.googlesource.com/1151615
Commit-Queue: Ned Nguyen <nednguyen@google.com>
Reviewed-by: Ned Nguyen <nednguyen@google.com>
Cr-Commit-Position: refs/heads/master@{#578342}

tools/perf/expectations.config

@@ -74,6 +74,7 @@ crbug.com/723783 [ Win ] loading.desktop/Orange_cold [ Skip ]
 crbug.com/723783 [ Win ] loading.desktop/Orange_warm [ Skip ]
 crbug.com/752611 [ Linux ] loading.desktop/uol.com.br_cold [ Skip ]
 crbug.com/752611 [ Linux ] loading.desktop/uol.com.br_warm [ Skip ]
+crbug.com/867836 [ All ] loading.desktop/Elmundo_warm [ Skip ]
 
 # Benchmark: loading.mobile
 crbug.com/676612 [ Nexus6_Webview ] loading.mobile/* [ Skip ]