Revert of 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 68394ec28fce6c55dfcca55a5e3ddb28967b8265..6265e52fde1a0858f31d21ac565a7c0cd8a94231 100644
--- a/chrome/browser/net/chrome_network_delegate.h
+++ b/chrome/browser/net/chrome_network_delegate.h
@@ -176,6 +176,7 @@
   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,
@@ -217,6 +218,8 @@
   // 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);