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

chrome/browser/net/chrome_network_delegate.h

Index: chrome/browser/net/chrome_network_delegate.h
diff --git a/chrome/browser/net/chrome_network_delegate.h b/chrome/browser/net/chrome_network_delegate.h
index 6265e52fde1a0858f31d21ac565a7c0cd8a94231..68394ec28fce6c55dfcca55a5e3ddb28967b8265 100644
--- a/chrome/browser/net/chrome_network_delegate.h
+++ b/chrome/browser/net/chrome_network_delegate.h
@@ -176,7 +176,6 @@ class ChromeNetworkDelegate : public net::NetworkDelegateImpl {
   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,
@@ -218,8 +217,6 @@ class ChromeNetworkDelegate : public net::NetworkDelegateImpl {
   // 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);