Implement a skeleton version of Expect CT reports

chrome/browser/net/expect_ct_monitor.h

Index: chrome/browser/net/expect_ct_monitor.h
diff --git a/chrome/browser/net/expect_ct_monitor.h b/chrome/browser/net/expect_ct_monitor.h
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+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_NET_EXPECT_CT_MONITOR_H_
+#define CHROME_BROWSER_NET_EXPECT_CT_MONITOR_H_
+
+#include "base/macros.h"
+
+namespace net {
+class URLRequest;
+}  // namespace net
+
+// An interface for monitoring whenever a URLRequest uses a certificate
+// that violates Certificate Transparency policy.
+class ExpectCTMonitor {
+ public:
+  ExpectCTMonitor() {}
+  virtual ~ExpectCTMonitor() {}
+
+  // This method is called when a |request| failed to comply with
+  // Certificate Transparency policy.
+  virtual void OnCTComplianceFailed(net::URLRequest* request) = 0;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ExpectCTMonitor);
+};
+
+#endif  // CHROME_BROWSER_NET_EXPECT_CT_MONITOR_H_