Those are great photos! Pacific Chorus Frog and Pacific Tree Frog are two common names for the same frog, which is very confusing. I believe this species has two common names because it's been placed in different genera over time. It was once in Hyla, the Holarctic tree frogs, but is now in Pseudacris, the chorus frogs. Pacific Tree Frog may be the most commonly used name.
Another confusing thing is their wide variety of colors and patterns. Individuals can actually change between colors such as green, brown and gray, although it's a slow process. But this is the only local species that's only a couple of inches long as an adult, has rounded toe pads and makes a very loud two-syllable ribbit call. Typically, the black eye-stripe ends at the front leg, but in your photos, the grayish frog's eye-stripe doesn't quite reach his leg. That seems to be an unusual variation.