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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=169435879

… public.

This will make custom implementations easier. All other classes in the package
are already public.

Also modified the visibility of AbstractMemoryDataStore.save() from package
private to public.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=174893279

…(...)

where the value will be immediately unboxed anyway.

The change removes small-but-pervasive inefficiencies from creating and
immediately discarding instances of the wrapped value, as well as removing
unnecessary syntax.

More information: go/lsc-immediateunboxing

Tested:
    tap_presubmit: http://test/OCL:189509157:BASE:189708880:1521556795490:d7b0a09a
    Some tests failed; test failures are believed to be unrelated to this CL

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=189880661

When lowLevelHttpRequest is not set via MockHttpTransport.Builder, buildRequest() creates a new instance of MockLowLevelHttpRequest. Due to what seems to be a bug, the newly created MLLHR wasn't saved to MHT instance. That means, getLowLevelHttpRequest() called on such instance returns null, making it impossible to inspect actual request being sent. For example, this bug made it impossible to verify headers of outbound HTTP requests.

This CL mirrors a change in the github repository: googleapis@8b59272

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=193200613