Add enableReferrers and enableHyperlinkAuditing to contentSettings.misc API.

chrome/browser/prefs/pref_member.h

Index: chrome/browser/prefs/pref_member.h
diff --git a/chrome/browser/prefs/pref_member.h b/chrome/browser/prefs/pref_member.h
index 88a00711f4e91286a64d7f6130191160c873d0e8..28b6508af1a0c30d9d76f9d35f6ac0ef8877a432 100644
--- a/chrome/browser/prefs/pref_member.h
+++ b/chrome/browser/prefs/pref_member.h
@@ -33,8 +33,10 @@
 #include "base/values.h"
 #include "content/browser/browser_thread.h"
 #include "content/common/notification_observer.h"
+#include "content/common/notification_registrar.h"
 
 class PrefService;
+class Profile;
 
 namespace subtle {
 
@@ -86,6 +88,8 @@ class PrefMemberBase : public NotificationObserver {
 
   virtual void CreateInternal() const = 0;
 
+  void ObserveProfileDestruction(Profile* profile);
+
   // See PrefMember<> for description.
   void Destroy();
 
@@ -120,6 +124,7 @@ class PrefMemberBase : public NotificationObserver {
  // Ordered the members to compact the class instance.
  private:
   std::string pref_name_;
+  NotificationRegistrar registrar_;
   NotificationObserver* observer_;
   PrefService* prefs_;
 
@@ -145,6 +150,12 @@ class PrefMember : public subtle::PrefMemberBase {
     subtle::PrefMemberBase::Init(pref_name, prefs, observer);
   }
 
+  // Starts observing PROFILE_DESTROYED notifications for the given |profile|,
+  // to automatically unsubscribe from the PrefService.
+  void ObserveProfileDestruction(Profile* profile) {
+    subtle::PrefMemberBase::ObserveProfileDestruction(profile);
+  }
+
   // Unsubscribes the PrefMember from the PrefService. After calling this
   // function, the PrefMember may not be used any more.
   // This method should only be called on the UI thread.