First-Party Cookies: Wire it up as an experimental web platform feature

net/base/network_delegate.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_BASE_NETWORK_DELEGATE_H_
 #define NET_BASE_NETWORK_DELEGATE_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 86 matching lines @@
                      const CookieList& cookie_list);
   bool CanSetCookie(const URLRequest& request,
                     const std::string& cookie_line,
                     CookieOptions* options);
   bool CanAccessFile(const URLRequest& request,
                      const base::FilePath& path) const;
   bool CanThrottleRequest(const URLRequest& request) const;
   bool CanEnablePrivacyMode(const GURL& url,
                             const GURL& first_party_for_cookies) const;
 
+  // TODO(mkwst): Remove this once we decide whether or not we wish to ship
+  // first-party cookies. https://crbug.com/459154
+  bool FirstPartyOnlyCookieExperimentEnabled() const;
+
   bool CancelURLRequestWithPolicyViolatingReferrerHeader(
       const URLRequest& request,
       const GURL& target_url,
       const GURL& referrer_url) const;
 
  private:
   // This is the interface for subclasses of NetworkDelegate to implement. These
   // member functions will be called by the respective public notification
   // member function, which will perform basic sanity checking.
 
@@ skipping 142 matching lines @@
   // request is overloaded or down.
   virtual bool OnCanThrottleRequest(const URLRequest& request) const = 0;
 
   // Returns true if the given |url| has to be requested over connection that
   // is not tracked by the server. Usually is false, unless user privacy
   // settings block cookies from being get or set.
   virtual bool OnCanEnablePrivacyMode(
       const GURL& url,
       const GURL& first_party_for_cookies) const = 0;
 
+  // Returns true if the embedder has enabled the "first-party" cookie
+  // experiment, and false otherwise.
+  //
+  // TODO(mkwst): Remove this once we decide whether or not we wish to ship
+  // first-party cookies. https://crbug.com/459154
+  virtual bool OnFirstPartyOnlyCookieExperimentEnabled() const = 0;
+
   // Called when the |referrer_url| for requesting |target_url| during handling
   // of the |request| is does not comply with the referrer policy (e.g. a
   // secure referrer for an insecure initial target).
   // Returns true if the request should be cancelled. Otherwise, the referrer
   // header is stripped from the request.
   virtual bool OnCancelURLRequestWithPolicyViolatingReferrerHeader(
       const URLRequest& request,
       const GURL& target_url,
       const GURL& referrer_url) const = 0;
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_NETWORK_DELEGATE_H_