CryptAuth: Remove unused FakeCryptAuthDeviceIdProvider.

R=khorimoto@chromium.org

Bug: 899324
Test: none
Change-Id: I764a9dc6f2d38f896a8d7ec41f15a834e5bbba85
Reviewed-on: https://chromium-review.googlesource.com/c/1330842Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Commit-Queue: James Hawkins <jhawkins@chromium.org>
Cr-Commit-Position: refs/heads/master@{#607271}

components/cryptauth/BUILD.gn

@@ -136,8 +136,6 @@ static_library("test_support") {
     "fake_background_eid_generator.h",
     "fake_connection.cc",
     "fake_connection.h",
-    "fake_cryptauth_device_id_provider.cc",
-    "fake_cryptauth_device_id_provider.h",
     "fake_cryptauth_device_manager.cc",
     "fake_cryptauth_device_manager.h",
     "fake_cryptauth_enrollment_manager.cc",

components/cryptauth/fake_cryptauth_device_id_provider.cc

-// Copyright 2018 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.
-
-#include "components/cryptauth/fake_cryptauth_device_id_provider.h"
-
-namespace cryptauth {
-
-FakeCryptAuthDeviceIdProvider::FakeCryptAuthDeviceIdProvider(
-    const std::string& device_id)
-    : device_id_(device_id) {}
-
-FakeCryptAuthDeviceIdProvider::~FakeCryptAuthDeviceIdProvider() = default;
-
-std::string FakeCryptAuthDeviceIdProvider::GetDeviceId() const {
-  return device_id_;
-}
-
-}  // namespace cryptauth

components/cryptauth/fake_cryptauth_device_id_provider.h

-// Copyright 2018 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 COMPONENTS_CRYPTAUTH_FAKE_CRYPTAUTH_DEVICE_ID_PROVIDER_H_
-#define COMPONENTS_CRYPTAUTH_FAKE_CRYPTAUTH_DEVICE_ID_PROVIDER_H_
-
-#include "components/cryptauth/cryptauth_device_id_provider.h"
-
-namespace cryptauth {
-
-// Test implementation for CryptAuthDeviceIdProvider.
-class FakeCryptAuthDeviceIdProvider : public CryptAuthDeviceIdProvider {
- public:
-  FakeCryptAuthDeviceIdProvider(const std::string& device_id);
-  ~FakeCryptAuthDeviceIdProvider() override;
-
-  // CryptAuthDeviceIdProvider:
-  std::string GetDeviceId() const override;
-
- private:
-  const std::string device_id_;
-
-  DISALLOW_COPY_AND_ASSIGN(FakeCryptAuthDeviceIdProvider);
-};
-
-}  // namespace cryptauth
-
-#endif  // COMPONENTS_CRYPTAUTH_FAKE_CRYPTAUTH_DEVICE_ID_PROVIDER_H_