Enable 'First-Party-Only' cookies by default.

chrome/browser/net/chrome_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 CHROME_BROWSER_NET_CHROME_NETWORK_DELEGATE_H_
 #define CHROME_BROWSER_NET_CHROME_NETWORK_DELEGATE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 158 matching lines @@
                        const net::CookieList& cookie_list) override;
   bool OnCanSetCookie(const net::URLRequest& request,
                       const std::string& cookie_line,
                       net::CookieOptions* options) override;
   bool OnCanAccessFile(const net::URLRequest& request,
                        const base::FilePath& path) const override;
   bool OnCanThrottleRequest(const net::URLRequest& request) const override;
   bool OnCanEnablePrivacyMode(
       const GURL& url,
       const GURL& first_party_for_cookies) const override;
-  bool OnFirstPartyOnlyCookieExperimentEnabled() const override;
   bool OnCancelURLRequestWithPolicyViolatingReferrerHeader(
       const net::URLRequest& request,
       const GURL& target_url,
       const GURL& referrer_url) const override;
 
   void AccumulateContentLength(
       int64 received_payload_byte_count,
       int64 original_payload_byte_count);
 
   scoped_ptr<ChromeExtensionsNetworkDelegate> extensions_delegate_;
@@ skipping 21 matching lines @@
   static bool g_allow_file_access_;
 
   // True if OnCanThrottleRequest should always return false.
   //
   // Note: This needs to be static as the instance of
   // ChromeNetworkDelegate used may change over time, and we need to
   // set this variable once at start-up time.  It is effectively
   // static anyway since it is based on a command-line flag.
   static bool g_never_throttle_requests_;
 
-  bool experimental_web_platform_features_enabled_;
-
   bool first_request_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeNetworkDelegate);
 };
 
 #endif  // CHROME_BROWSER_NET_CHROME_NETWORK_DELEGATE_H_