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This CL adds basic support for equality testing of system call
arguments, and conjunctive and disjunctive combinations of tests.

Reland of https://codereview.chromium.org/299743002/

BUG=375497

Review URL: https://codereview.chromium.org/396323002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@283687 0039d316-1c4b-4281-b951-d872f2087c98