Rename first-party-only cookies to same-site cookies.

net/cookies/canonical_cookie.h

Index: net/cookies/canonical_cookie.h
diff --git a/net/cookies/canonical_cookie.h b/net/cookies/canonical_cookie.h
index da836b2ba916fd131df1835dfa8ef7000ca21830..eda4903c090704f2f540f311d12defcd9a409ee9 100644
--- a/net/cookies/canonical_cookie.h
+++ b/net/cookies/canonical_cookie.h
@@ -38,7 +38,7 @@ class NET_EXPORT CanonicalCookie {
                   const base::Time& last_access,
                   bool secure,
                   bool httponly,
-                  bool firstpartyonly,
+                  bool samesite,

[mmenke, 2016/01/22 17:05:28]

Should this be same_site?  The property itself uses SameSite, and the property
is queried by IsSameSite, which would imply that it should be.

[Mike West, 2016/01/25 09:46:54]

I'm basically following along with `httponly` here, which is a bit fluid in the
existing code. I'm happy to use either `httponly`/`samesite` or
`http_only`/`same_site` at each callsite if you'd prefer.

[mmenke, 2016/01/25 18:47:10]

I'd say go with `http_only`/`same_site`

[Mike West, 2016/01/26 11:05:45]

`same_site` is done in this patch. I'll do `http_only` in a subsequent patch to
keep the diff clean.

                   CookiePriority priority);
 
   // This constructor does canonicalization but not validation.
@@ -70,7 +70,7 @@ class NET_EXPORT CanonicalCookie {
                                             const base::Time& expiration,
                                             bool secure,
                                             bool http_only,
-                                            bool first_party_only,
+                                            bool samesite,
                                             bool enforce_strict_secure,
                                             CookiePriority priority);
 
@@ -85,7 +85,7 @@ class NET_EXPORT CanonicalCookie {
   const base::Time& ExpiryDate() const { return expiry_date_; }
   bool IsSecure() const { return secure_; }
   bool IsHttpOnly() const { return httponly_; }
-  bool IsFirstPartyOnly() const { return first_party_only_; }
+  bool IsSameSite() const { return samesite_; }
   CookiePriority Priority() const { return priority_; }
   bool IsDomainCookie() const {
     return !domain_.empty() && domain_[0] == '.'; }
@@ -204,7 +204,7 @@ class NET_EXPORT CanonicalCookie {
   base::Time last_access_date_;
   bool secure_;
   bool httponly_;
-  bool first_party_only_;
+  bool samesite_;
   CookiePriority priority_;
 };