UCB L&S admits all frosh as undeclared. You must then earn a 3.30 college GPA in CS 61A, 61B, 70 to declare the L&S CS major.
Since L&S is the largest division at UCB, L&S admission stats should be close to overall admission stats for UCB. See http://talk.collegeconfidential.com/what-my-chances/1903428-faq-uc-historical-frosh-admit-rates-by-hs-gpa.html for more information.