Rename WK_lcfirst with LcFirst, WK_ucfirst with UcFirst.
Rename WK_lcfirst with LcFirst, WK_ucfirst with UcFirst.

Also this patch replaces a couple of "WebKit" with "Blink".

R=abarth,eseidel
BUG=230254

Review URL: https://chromiumcodereview.appspot.com/14359015

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@149424 bbb929c8-8fbe-4397-9dbb-9b2b20218538

primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs