Rename "first_party_for_cookies" to "site_for_cookies".

This is consistent with the language used in
https://tools.ietf.org/html/draft-ietf-httpbis-cookie-same-site to
describe the difference in behavior for "same-site" and "cross-site"
requests, and more accurately describes the extent of the check
that's happening under the hood when users choose to "block
third-party cookies".

This change is completely mechanical, produced by the following:

git grep -n -l \
  -e 'first_party_for_cookies' -e 'west-first-party-cookies' \
  -e 'FirstPartyForCookies' -e 'firstPartyForCookies' -- \
  "*.h" "*.hpp" "*.cpp" "*.c" "*.cc" "*.cpp" "*.inl" "*.grd" \
  "*.idl" "*.m" "*.mm" "*.py" "*.sh" "*.cfg" "*.tac" "*.go" \
  "*SConscript" "SConscript*" "*.scons" "*.vcproj" "*.vsprops" \
  "*.make" "*.gyp" "*.gypi" "*.isolate" "*.js" "*.html" "*.css" \
  "*.ebuild" "*.pl" "*.pm" \
  | xargs -L1 sed -i '' \
      -e 's/first_party_for_cookies/site_for_cookies/g' \
      -e 's/west-first-party-cookies/ietf-httpbis-cookie-same-site/' \
      -e 's/FirstPartyForCookies/SiteForCookies/g' \
      -e 's/firstPartyforCookies/siteForCookies/g' \
&& git cl format

Cq-Include-Trybots: master.tryserver.chromium.linux:linux_site_isolation
Change-Id: I8e6d48ae2ff15ba82b9d3b62d2a53faf4608819f
Reviewed-on: https://chromium-review.googlesource.com/590451
Commit-Queue: Mike West <[email protected]>
Reviewed-by: Ryan Sleevi <[email protected]>
Reviewed-by: Jochen Eisinger <[email protected]>
Cr-Commit-Position: refs/heads/master@{#493378}
diff --git a/net/websockets/websocket_stream_create_test_base.h b/net/websockets/websocket_stream_create_test_base.h
index 5805b50..aab93c7 100644
--- a/net/websockets/websocket_stream_create_test_base.h
+++ b/net/websockets/websocket_stream_create_test_base.h
@@ -42,7 +42,7 @@
   void CreateAndConnectStream(const GURL& socket_url,
                               const std::vector<std::string>& sub_protocols,
                               const url::Origin& origin,
-                              const GURL& first_party_for_cookies,
+                              const GURL& site_for_cookies,
                               const std::string& additional_headers,
                               std::unique_ptr<base::Timer> timer);