Created AttestationPolicyObserver.

chrome/browser/chromeos/attestation/attestation_ca_client.h

Index: chrome/browser/chromeos/attestation/attestation_ca_client.h
diff --git a/chrome/browser/chromeos/attestation/attestation_ca_client.h b/chrome/browser/chromeos/attestation/attestation_ca_client.h
new file mode 100644
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+++ b/chrome/browser/chromeos/attestation/attestation_ca_client.h
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+// Copyright (c) 2013 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_CHROMEOS_ATTESTATION_ATTESTATION_CA_CLIENT_H_
+#define CHROME_BROWSER_CHROMEOS_ATTESTATION_ATTESTATION_CA_CLIENT_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+
+#include "chromeos/attestation/attestation_flow.h"
+
+namespace chromeos {
+namespace attestation {
+
+// This class is a ServerProxy implementation for the Chrome OS attestation
+// flow.  It sends all requests to an Attestation CA via HTTPS.
+class AttestationCAClient : public ServerProxy {
+ public:
+  AttestationCAClient();
+  virtual ~AttestationCAClient();
+
+  // chromeos::attestation::ServerProxy:
+  virtual void SendEnrollRequest(const std::string& request,
+                                 const DataCallback& on_response) OVERRIDE;
+  virtual void SendCertificateRequest(const std::string& request,
+                                      const DataCallback& on_response) OVERRIDE;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(AttestationCAClient);
+};
+
+}  // namespace attestation
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_ATTESTATION_ATTESTATION_CA_CLIENT_H_