Adds class name to log
Adds class name to log

BUG=544037, 523255
TEST=test only change
R=scottmg@chromium.org
TBR=scottmg@chromium.org

Review URL: https://codereview.chromium.org/1420463002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#354929}

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