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This puts the method name more in line with Google C++ style, since snake_case
should only be used with simple getters.

Bug: 906676
Change-Id: I045aa7c8ac641b37854b38cf0934890ebbd88ca0
Reviewed-on: https://chromium-review.googlesource.com/c/1343250Reviewed-by: Jacob Dufault <jdufault@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Quan Nguyen <qnnguyen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#609491}