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..279f7024ea2eeee19d05d6361b4484a8c3c551f5 100644
--- a/chrome/browser/net/chrome_network_delegate.h
+++ b/chrome/browser/net/chrome_network_delegate.h
@@ -12,20 +12,31 @@
 #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 passed to initialized
+  // on the UI thread (see below) beforehand. 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();
 
+  // Binds |enable_referrers| to |pref_service| and moves it to the IO thread.
+  // This method should be called on the UI thread.
+  static void InitializeReferrersEnabled(BooleanPrefMember* enable_referrers,
+                                         PrefService* pref_service);
  private:
   // NetworkDelegate methods:
   virtual int OnBeforeURLRequest(net::URLRequest* request,
@@ -41,6 +52,9 @@ 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);
 };