Add U2F request state machines

device/u2f/mock_u2f_device.h

Index: device/u2f/mock_u2f_device.h
diff --git a/device/u2f/mock_u2f_device.h b/device/u2f/mock_u2f_device.h
new file mode 100644
index 0000000000000000000000000000000000000000..f4e65da0524418633169f24d71ed0e8c4e996eca
--- /dev/null
+++ b/device/u2f/mock_u2f_device.h
@@ -0,0 +1,43 @@
+// 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 DEVICE_U2F_MOCK_U2F_DEVICE_H_
+#define DEVICE_U2F_MOCK_U2F_DEVICE_H_
+
+#include <vector>
+
+#include "base/memory/ptr_util.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "u2f_apdu_command.h"
+#include "u2f_device.h"
+
+namespace device {
+
+class MockU2fDevice : public U2fDevice {
+ public:
+  static constexpr uint8_t kSign = 0x1;
+  static constexpr uint8_t kRegister = 0x5;
+
+  MockU2fDevice();
+  ~MockU2fDevice() override;
+
+  MOCK_METHOD1(TryWink, void(const WinkCallback& cb));
+  MOCK_METHOD0(GetId, std::string(void));
+  // GMock cannot mock a method taking a std::unique_ptr<T>
+  MOCK_METHOD2(DeviceTransactPtr,
+               void(U2fApduCommand* command, const DeviceCallback& cb));
+  void DeviceTransact(std::unique_ptr<U2fApduCommand> command,
+                      const DeviceCallback& cb) override;
+  static void TransactNoError(std::unique_ptr<U2fApduCommand> command,
+                              const DeviceCallback& cb);
+  static void NotSatisfied(U2fApduCommand* cmd, const DeviceCallback& cb);
+  static void WrongData(U2fApduCommand* cmd, const DeviceCallback& cb);
+  static void NoErrorSign(U2fApduCommand* cmd, const DeviceCallback& cb);
+  static void NoErrorRegister(U2fApduCommand* cmd, const DeviceCallback& cb);
+  static void WinkDoNothing(const WinkCallback& cb);
+};
+
+}  // namespace device
+
+#endif  // DEVICE_U2F_MOCK_U2F_DEVICE_H_