Unit-test CAPI and CNG SSLPrivateKey implementations.

net/ssl/ssl_platform_key_win.h

Index: net/ssl/ssl_platform_key_win.h
diff --git a/net/ssl/ssl_platform_key_win.h b/net/ssl/ssl_platform_key_win.h
new file mode 100644
index 0000000000000000000000000000000000000000..a5f6455d8635fa48286d60a7f9efd281cf51ebd6
--- /dev/null
+++ b/net/ssl/ssl_platform_key_win.h
@@ -0,0 +1,38 @@
+// Copyright 2017 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 NET_SSL_SSL_PLATFORM_KEY_WIN_H_
+#define NET_SSL_SSL_PLATFORM_KEY_WIN_H_
+
+#include <windows.h>
+
+// Must be after windows.h.
+#include <NCrypt.h>
+
+#include "base/memory/ref_counted.h"
+#include "crypto/wincrypt_shim.h"
+#include "net/base/net_export.h"
+
+namespace net {
+
+class SSLPrivateKey;
+class X509Certificate;
+
+// Returns an SSLPrivateKey backed by |prov| and |key_spec|, which must
+// correspond to |certificate|'s public key. Takes ownership of |prov|.
+NET_EXPORT_PRIVATE scoped_refptr<SSLPrivateKey> WrapCAPIPrivateKey(
+    const X509Certificate* certificate,
+    HCRYPTPROV prov,
+    DWORD key_spec);
+
+// Returns an SSLPrivateKey backed by |key|, which must correspond to
+// |certificate|'s public key, or nullptr on error. Takes ownership of |key| in
+// both cases.
+NET_EXPORT_PRIVATE scoped_refptr<SSLPrivateKey> WrapCNGPrivateKey(
+    const X509Certificate* certificate,
+    NCRYPT_KEY_HANDLE key);
+
+}  // namespace net
+
+#endif  // NET_SSL_SSL_PLATFORM_KEY_WIN_H_