Certificate Transparency: Start tracking logs' state

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 7a3fdadad0596f1a6bfcc1cd9b10b24e93df1066..60d27edb0e19e570ecf11bdd4166fe90864cde77 100644
--- a/chrome/browser/io_thread.h
+++ b/chrome/browser/io_thread.h
@@ -84,6 +84,13 @@ class URLRequestBackoffManager;
 class URLRequestContext;
 class URLRequestContextGetter;
 class URLRequestJobFactory;
+
+namespace ct {
+class CTObserver;
+class STHObserver;
+class STHReporter;
+}  // namespace ct
+
 }  // namespace net
 
 namespace net_log {
@@ -171,6 +178,10 @@ class IOThread : public content::BrowserThreadDelegate {
     // |system_cookie_store| and |system_channel_id_service| are shared
     // between |proxy_script_fetcher_context| and |system_request_context|.
     std::unique_ptr<net::CookieStore> system_cookie_store;
+
+    // Used by the cert_transparency_verifier. See IOThread::CleanUp
+    // on lifetime management of this object.
+    std::unique_ptr<net::ct::CTObserver> cert_transparency_observer;
 #if defined(ENABLE_EXTENSIONS)
     scoped_refptr<extensions::EventRouterForwarder>
         extension_event_router_forwarder;
@@ -434,6 +445,16 @@ class IOThread : public content::BrowserThreadDelegate {
   // a result of a field trial or a command line flag.
   static bool ShouldEnableQuicForDataReductionProxy();
 
+  // Sets the reporter for new STH reports. Observers created by this
+  // class and other classes will be registered with it (the IOThread
+  // class will manage registration).
+  // Does not take ownership of |reporter| as it will out-live the IOThread.
+  void RegisterSTHReporter(net::ct::STHReporter* reporter);
+  // Registers the |observer| for new STH notifications.
+  void RegisterSTHObserver(net::ct::STHObserver* observer);
+  // Un-registers the |observer|.
+  void UnregisterSTHObserver(net::ct::STHObserver* observer);
+
   // Returns the callback for updating data use prefs.
   const metrics::UpdateUsagePrefCallbackType& GetMetricsDataUseForwarder();
 
@@ -568,6 +589,14 @@ class IOThread : public content::BrowserThreadDelegate {
   // True if QUIC is allowed by policy.
   bool is_quic_allowed_by_policy_;
 
+  // Owned by the STHSet component, is null before it's created.
+  net::ct::STHReporter* sth_reporter_;
+
+  // Keeps track of all the STHObserver instances that need
+  // to get notification of new STHs, from this class
+  // and ProfileIOData.
+  std::set<net::ct::STHObserver*> sth_observers_;
+
   const base::TimeTicks creation_time_;
 
   // Callback for updating data use prefs which needs to be initialized on UI