In this articleGOOGLwatch nowAny day now, a federal judge is expected to issue a landmark ruling that could upend some of the most lucrative deals in Silicon Valley: Google's default search contracts.At stake is more than $26 billion a year, $20 billion of which goes to Apple. That's nearly a quarter of Alphabet's operating income.For decades, the Apple-Google pact has helped determine who controls the internet, which is exactly why it's now in the crosshairs.U.S. District Judge Amit Mehta ruled last year t ...