Add enableReferrers and enableHyperlinkAuditing to contentSettings.misc API.

chrome/browser/prefs/pref_member.cc

Index: chrome/browser/prefs/pref_member.cc
diff --git a/chrome/browser/prefs/pref_member.cc b/chrome/browser/prefs/pref_member.cc
index 405aab63d850747d491fdfc6d5cc779a1373195c..2efeafc2c11523d7436b3c64e7e7a10bddd15fbb 100644
--- a/chrome/browser/prefs/pref_member.cc
+++ b/chrome/browser/prefs/pref_member.cc
@@ -18,8 +18,7 @@ PrefMemberBase::PrefMemberBase()
 }
 
 PrefMemberBase::~PrefMemberBase() {
-  if (prefs_ && !pref_name_.empty())
-    prefs_->RemovePrefObserver(pref_name_.c_str(), this);
+  Destroy();
 }
 
 
@@ -38,7 +37,7 @@ void PrefMemberBase::Init(const char* pref_name, PrefService* prefs,
 }
 
 void PrefMemberBase::Destroy() {
-  if (prefs_) {
+  if (prefs_ && !pref_name_.empty()) {
     prefs_->RemovePrefObserver(pref_name_.c_str(), this);
     prefs_ = NULL;
   }
@@ -62,10 +61,6 @@ void PrefMemberBase::Observe(NotificationType type,
     observer_->Observe(type, source, details);
 }
 
-void PrefMemberBase::VerifyValuePrefName() const {
-  DCHECK(!pref_name_.empty());
-}
-
 void PrefMemberBase::UpdateValueFromPref() const {
   VerifyValuePrefName();
   const PrefService::Preference* pref =
@@ -76,6 +71,12 @@ void PrefMemberBase::UpdateValueFromPref() const {
   internal()->UpdateValue(pref->GetValue()->DeepCopy(), pref->IsManaged());
 }
 
+void PrefMemberBase::VerifyPref() const {
+  VerifyValuePrefName();
+  if (!internal())
+    UpdateValueFromPref();
+}
+
 PrefMemberBase::Internal::Internal() : thread_id_(BrowserThread::UI) { }
 PrefMemberBase::Internal::~Internal() { }