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Test failure is due to code format

Files not formatted: src/grpc/zero_copy_stream_test.cc
Code style check failed.

whch is enforced by this script
script/robot-style

@bnordli if you don't mind, I can take over your change, and use a separate to submit it.

That's fine with me, @qiwzhang, and probably much quicker too! Thanks :)

(I didn't have a build environment and just tried to follow the general formatting.)

We requested a CLA for my company today, but it seems like I committed with my personal email. Hopefully everything should be alright using [email protected].

No, the commit has the correct email. Let's check if my boss signed the CLA.

@googlebot I signed it!