tree 84ac5b4d63b48e882f1bad7c8c4dca6cf9804bf5
parent 6658ff3a7d93ef97704d5d4b207ee1b38c49919c
author Alexander Timin <altimin@google.com> 1622725714 +0000
committer Alexander Timin <altimin@google.com> 1622725714 +0000

TracedProto: Fix MSVC compilation

MSVC doesn't take too kindly to having multiple member functions with
the same signature, despite all but one not having a valid return type.
They should have been ignored due to SFINAE, but they aren't (more details here:
https://developercommunity.visualstudio.com/t/c-compiler-fails-sfinae-error-c2535/671364)

Switch the implementation of the TracedProtoWriter from multiple
SFINAE implementations of the same functions to partial specialisations
of a nested struct.

R=primiano@google.com,skyostil@google.com

Bug: b/189081318
Change-Id: I9fbf9fb9322fa1494f1f0ccf0d969b6c6b324354