Remove WebThread::GetBlockingPool usage for LargeIconService

Bug: 667892
Change-Id: I6a044a60e212c8cd8f264a8d6c6d3e2c74a3bcdf
Reviewed-on: https://chromium-review.googlesource.com/591147
Commit-Queue: Gauthier Ambard <gambard@chromium.org>
Reviewed-by: Mark Cogan <marq@chromium.org>
Cr-Commit-Position: refs/heads/master@{#490904}
1 file changed