Our tests are linked with gunit_main (or gunit_main_no_google3), which means that main is already defined in another translation unit. Having two main functions violates ODR and hence can result in undefined behavior.

There is no need to fear losing tests. If a build system tries to run a test and there is no main function, then it will fail. Hence, i cannot see a way for this to stop testing a test.

PiperOrigin-RevId: 213593596
GitOrigin-RevId: 1fd8b2dcc18d24901d77170082587557cc5303e3

Remove ComputeSharedEcdh function because:
  + It's moved to subtle_util_boringssl
  + It's not used any more and it's not carefully tested.

PiperOrigin-RevId: 202044794
GitOrigin-RevId: 2248584d3263c9382471b3f5028a5de506e1d6ff

Removing references to NIST P-224 and SHA224, which we never supported and are not used in many places.

We keep SHA1 because HMAC-SHA1 is safe and a popular MAC.

PiperOrigin-RevId: 193747110
GitOrigin-RevId: 2f657666903fc8e7c3963017a7462ac33bb7b20d

PiperOrigin-RevId: 189379168
GitOrigin-RevId: 2524f3b25fbaa08011b512a2730265435f48db37

Also putting all subtle-classes in namespace crypto::tink::subtle.

Change-Id: I47fece5df4ef524521449320d619b13ba8466373
ORIGINAL_AUTHOR=Bartosz Przydatek <przydatek@google.com>
GitOrigin-RevId: 39ba523aecf79247e31f87e974f79eec3dfaf1bc

Change-Id: I62b3161a7c0218c78791ed750b2b3b8bd55c623f
ORIGINAL_AUTHOR=Bartosz Przydatek <przydatek@google.com>
GitOrigin-RevId: 71c1d0e5a35cace54ea0cf066358818371607032

Change-Id: I115b64a1d4a3e4eadb330ed707c9206efd42ae31
ORIGINAL_AUTHOR=Thai Duong <thaidn@google.com>
GitOrigin-RevId: 58c9c7744df883bbbe906d3928027607208a7d1a

Change-Id: If4fa8cff5832a7eb68680ff61bb8d1b5b7ee160a
ORIGINAL_AUTHOR=Quan Nguyen <quannguyen@google.com>
GitOrigin-RevId: 3ac8c50e4f29d863eec568ad9addb5dabc6f5ff8

Change-Id: Ia2a1d9ad90ac3ed9bd06f014b0b5ecf0476ad2eb
ORIGINAL_AUTHOR=Quan Nguyen <quannguyen@google.com>
GitOrigin-RevId: 68e71a328f66341bfb30afd659fe0afb3d2df295

Change-Id: I18e26993ee145226baff2f16317f00e2d4f8a569
ORIGINAL_AUTHOR=Quan Nguyen <quannguyen@google.com>
GitOrigin-RevId: d7dbc938cad7cbc3a9b3b68d46ef5a70d5c1c3b7