OOR-CORS: Rename *CORS* to *Cors* so to conform styleguide

This is mechanical, but a large change set.
As we discussed at a code review in the past, let's rename
all CORS related names.

Bug: 875759
Change-Id: I1d626f229ac3ddc7a1d83e921449db0d1472af1c
Tbr: [email protected], [email protected], [email protected], [email protected], [email protected], [email protected]
Reviewed-on: https://chromium-review.googlesource.com/c/1333018
Commit-Queue: Takashi Toyoshima <[email protected]>
Reviewed-by: Yutaka Hirano <[email protected]>
Cr-Commit-Position: refs/heads/master@{#608647}
198 files changed