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tzik authored
This CL refactors CancelbaleCallback into CancelableRepeatingCallback and CancelableOnceCallback for OnceCallback support. Change-Id: I40a3079bae598d440e84a737b7f7082a2c5e44bf Reviewed-on: https://chromium-review.googlesource.com/737399 Commit-Queue: Taiju Tsuiki <tzik@chromium.org> Reviewed-by: Dmitry Gozman <dgozman@chromium.org> Reviewed-by: Alexander Timin <altimin@chromium.org> Reviewed-by: Daniel Cheng <dcheng@chromium.org> Cr-Commit-Position: refs/heads/master@{#512795}
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