tree 99323d854c045c02bdc904bfe675799ae6b8d872
parent 71c16d955858d4ae42db65500fc04b090cc4c003
author Simon Lin <simonlin@google.com> 1594400597 +0800
committer GitHub <noreply@github.com> 1594400597 -0700
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[utils] add ChildMask class (#5206)

This commit adds the ChildMask class so that it can be reused by other
modules.