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b01400905d2ba23ec9f4541153532eefcfb0d5f5 by Mark Barolak <mbar@google.com>:

Tweak the comment for WebSafeBase64Unescape to make it match the style of the other comments in escaping.h.

PiperOrigin-RevId: 209596034

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dd35c55ee538ed458bb32494d87996d6624676df by Abseil Team <absl-team@google.com>:

Migrate FixedArray from allocator pointers to references. Also updates the name to be more generic as nothing about the implementation was specific to FixedArray's StorageElement*

PiperOrigin-RevId: 209438135
GitOrigin-RevId: b01400905d2ba23ec9f4541153532eefcfb0d5f5
Change-Id: I27304e4609708ec24fb19dce1e33215d7e4b5ae9