GitLab

Updated variable names in ShareTargetDiscoveryCallback and
TransferUpdateCallback to be consistent with C++ style guide.

Change-Id: I92d7994630dfee0d80f78ebeddbcb2d6d627b145
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2361844
Commit-Queue: Juliet Levesque <julietlevesque@google.com>
Reviewed-by: Josh Nohle <nohle@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#800320}