Implement a skeleton version of Expect CT reports

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 ea2a007daf41b8e452b35cbcd698e994d35dd9de..4abc1899916bb69d122f8a9220dc8c8637475415 100644
--- a/chrome/browser/net/chrome_network_delegate.h
+++ b/chrome/browser/net/chrome_network_delegate.h
@@ -23,6 +23,7 @@
 #endif
 
 class ChromeExtensionsNetworkDelegate;
+class ExpectCTMonitor;
 class PrefService;
 
 template<class T> class PrefMember;
@@ -128,6 +129,8 @@ class ChromeNetworkDelegate : public net::NetworkDelegateImpl {
       data_usage::DataUseAggregator* data_use_aggregator,
       bool is_data_usage_off_the_record);
 
+  void set_expect_ct_monitor(ExpectCTMonitor* expect_ct_monitor);
+
   // Binds the pref members to |pref_service| and moves them to the IO thread.
   // |enable_referrers| cannot be NULL, the others can.
   // This method should be called on the UI thread.
@@ -231,6 +234,10 @@ class ChromeNetworkDelegate : public net::NetworkDelegateImpl {
   // Controls whether network usage is reported as being off the record.
   bool is_data_usage_off_the_record_;
 
+  // The network delegate notifies |expect_ct_monitor_| when a
+  // certificate fails to comply with Certificate Transparency policy.
+  ExpectCTMonitor* expect_ct_monitor_;
+
   DISALLOW_COPY_AND_ASSIGN(ChromeNetworkDelegate);
 };