It has been brought to my attention that the Jimmy Walker player analysis had been left out in 2015 Pro Golf Synopsis. I have edited this in 2015 PGS and future purchasers as well as people that get the download link again should be receiving the edited version with Walker's analysis in there.
In the meantime, I have published Walker's analysis here. You can find similar analysis of the other 183 players on Tour in the book.
(click the picture to read Walker's analysis more clearly).