Add a suppression for inspector/console/console-format-es6.html flake.

TBR=jkummerow@chromium.org,yosin
BUG=432907

Review URL: https://codereview.chromium.org/722253002

git-svn-id: svn://svn.chromium.org/blink/trunk@185299 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/LayoutTests/TestExpectations

@@ -1401,3 +1401,4 @@ crbug.com/432790 [ XP ] virtual/prefer_compositing_to_lcd_text/compositing/overf
 crbug.com/431152 inspector/audits/audits-panel-functional.html [ Pass Failure ]
 crbug.com/431778 [ Win7 Linux Debug ] http/tests/security/shape-image-cors.html [ Pass Crash ]
 crbug.com/431643 [ Win ] http/tests/w3c/webperf/submission/Intel/resource-timing/test_resource_timing_cross_origin_redirect_chain_allow_timing.html [ Pass Failure ]
+crbug.com/432907 inspector/console/console-format-es6.html [ Pass Failure ]