Does anyone really think that Clinton is going to win a semi-closed primary in California by more than she won a closed primary in New York in the end? I doubt it.
As for Cruz, his support may be collapsing.
There are more non-whites in California, to be fair. She'll probably get NYC or Philly numbers in LA county, and the Bay Area isn't all Marin and Berkley so it won't be the Sanders blowout some people are thinking it'll be. Oakland, Solano, Napa, even Yolo should be Clinton territory.
Oakland's definitely Clinton territory thanks to a little thing called the black vote, amazing how people keep forgetting that when discussing Bay Area politics, especially since they were the dominant minority until just a few years ago [and probably the vote that kept Alameda in the blue through the '80's]. That little tid bit is what will put Clinton over the top once factoring in every other thing.