cc: Remove LayerTreeHost tests from DrMemory blacklist

Since we increased timeout for cc tests in 579189, this test should
pass.

BUG=516384
R=enne@chromium.org, danakj@chromium.org, vmpstr@chromium.org

Review-Url: https://codereview.chromium.org/2017383002
Cr-Original-Commit-Position: refs/heads/master@{#406702}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: eea862d56d10b29a347d49bac268af0bf9f57d31
1 file changed