Add enableReferrers and enableHyperlinkAuditing to contentSettings.misc API.

chrome/browser/io_thread.h

Index: chrome/browser/io_thread.h
diff --git a/chrome/browser/io_thread.h b/chrome/browser/io_thread.h
index 019b594487d3c940fd8338cb72228a7dca267f54..dd808ebdd1b53484322bcb384613567c5bbf7e0d 100644
--- a/chrome/browser/io_thread.h
+++ b/chrome/browser/io_thread.h
@@ -19,6 +19,7 @@ class ChromeNetLog;
 class ChromeURLRequestContextGetter;
 class ExtensionEventRouterForwarder;
 class ListValue;
+template<class T> class PrefMember;
 class PrefProxyConfigTracker;
 class PrefService;
 class SystemURLRequestContextGetter;
@@ -44,6 +45,8 @@ class URLRequestContextGetter;
 class URLSecurityManager;
 }  // namespace net
 
+typedef PrefMember<bool> BooleanPrefMember;
+
 class IOThread : public BrowserProcessSubThread {
  public:
   struct Globals {
@@ -177,6 +180,8 @@ class IOThread : public BrowserProcessSubThread {
   scoped_ptr<net::NetworkChangeNotifier::IPAddressObserver>
       network_change_observer_;
 
+  scoped_ptr<BooleanPrefMember> enable_referrers_;
+
   // Store HTTP Auth-related policies in this thread.
   std::string auth_schemes_;
   bool negotiate_disable_cname_lookup_;