devtools: Disable a quota chart test for PieChart rewrite

CL to enable:
https://chromium-review.googlesource.com/c/chromium/src/+/2360072

Change-Id: I3384ebb2f999d3d4403af82326ebfa6df57d3875
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2359134Reviewed-by: Alex Rudenko <alexrudenko@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#798587}

third_party/blink/web_tests/TestExpectations

@@ -4709,7 +4709,8 @@ crbug.com/678346 [ Win7 Debug ] storage/indexeddb/index-cursor.html [ Pass Timeo
 
 crbug.com/678493 http/tests/permissions/chromium/test-request-window.html [ Timeout Pass ]
 
-crbug.com/747751 http/tests/devtools/application-panel/storage-view-reports-quota.js [ Pass Timeout ]
+# TODO(petermarshall): Re-enable after landing devtools piechart changes.
+crbug.com/747751 http/tests/devtools/application-panel/storage-view-reports-quota.js [ Failure Pass Timeout ]
 
 crbug.com/689781 external/wpt/media-source/mediasource-duration.html [ Failure Pass ]
 crbug.com/689781 [ Win ] http/tests/media/media-source/mediasource-duration.html [ Failure Pass ]