Add enableReferrers and enableHyperlinkAuditing to contentSettings.misc API.

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 9c75dd95a891c93979e77add9db9e19f534a8876..5d753e9fff9f280d071cb44f7a3137ce599cb02c 100644
--- a/chrome/browser/net/chrome_network_delegate.h
+++ b/chrome/browser/net/chrome_network_delegate.h
@@ -12,17 +12,24 @@
 #include "net/base/network_delegate.h"
 
 class ExtensionEventRouterForwarder;
+template<class T> class PrefMember;
 class ProtocolHandlerRegistry;
 
+typedef PrefMember<bool> BooleanPrefMember;
+
 // ChromeNetworkDelegate is the central point from within the chrome code to
 // add hooks into the network stack.
 class ChromeNetworkDelegate : public net::NetworkDelegate {
  public:
   // If |profile_id| is the invalid profile, events will be broadcasted to all
   // profiles, otherwise, they will only be sent to the specified profile.
+  // |enable_referrers| is a PrefMember which should be bound to the profile's
+  // PrefService and moved to the IO thread. This object's owner is responsible
+  // for cleaning it up at shutdown.
   explicit ChromeNetworkDelegate(
       ExtensionEventRouterForwarder* event_router,
       ProfileId profile_id,
+      BooleanPrefMember* enable_referrers,
       ProtocolHandlerRegistry* protocol_handler_registry);
   virtual ~ChromeNetworkDelegate();
 
@@ -41,6 +48,9 @@ class ChromeNetworkDelegate : public net::NetworkDelegate {
 
   scoped_refptr<ExtensionEventRouterForwarder> event_router_;
   const ProfileId profile_id_;
+
+  // Weak, owned by our owner.
+  BooleanPrefMember* enable_referrers_;
   scoped_refptr<ProtocolHandlerRegistry> protocol_handler_registry_;
   DISALLOW_COPY_AND_ASSIGN(ChromeNetworkDelegate);
 };