4 files declare their use of DriverSpecificDatabaseTestBase

ConnectionTest.php in core/modules/mysql/tests/src/Kernel/mysql/ConnectionTest.php
LargeQueryTest.php in core/modules/mysql/tests/src/Kernel/mysql/LargeQueryTest.php
SqlModeTest.php in core/modules/mysql/tests/src/Kernel/mysql/SqlModeTest.php
ViewsTest.php in core/modules/mysql/tests/src/Kernel/mysql/ViewsTest.php

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