components: Cleanup class/struct fwd declarations

components/cryptauth/cryptauth_client.h

 // Copyright 2014 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_PROXIMITY_AUTH_CRYPTAUTH_CLIENT_H
 #define COMPONENTS_PROXIMITY_AUTH_CRYPTAUTH_CLIENT_H
 
 #include <memory>
 #include <string>
 
 #include "base/callback_forward.h"
 #include "base/macros.h"
 
 namespace cryptauth {
-class DeviceClassifier;
 class GetMyDevicesRequest;
 class GetMyDevicesResponse;
 class FindEligibleUnlockDevicesRequest;
 class FindEligibleUnlockDevicesResponse;
 class SendDeviceSyncTickleRequest;
 class SendDeviceSyncTickleResponse;
 class ToggleEasyUnlockRequest;
 class ToggleEasyUnlockResponse;
 class SetupEnrollmentRequest;
 class SetupEnrollmentResponse;
 class FinishEnrollmentRequest;
 class FinishEnrollmentResponse;
 }
 
-namespace net {
-class URLRequestContextGetter;
-}
-
 namespace cryptauth {
 
-class CryptAuthAccessTokenFetcher;
-class CryptAuthApiCallFlow;
-
 // Interface for making API requests to the CryptAuth service, which
 // manages cryptographic credentials (ie. public keys) for a user's devices.
 // Implmentations shall only processes a single request, so create a new
 // instance for each request you make. DO NOT REUSE.
 // For documentation on each API call, see
 // components/cryptauth/proto/cryptauth_api.proto
 class CryptAuthClient {
  public:
   typedef base::Callback<void(const std::string&)> ErrorCallback;
 
@@ skipping 57 matching lines @@
 class CryptAuthClientFactory {
  public:
   virtual ~CryptAuthClientFactory() {}
 
   virtual std::unique_ptr<CryptAuthClient> CreateInstance() = 0;
 };
 
 }  // namespace cryptauth
 
 #endif  // COMPONENTS_PROXIMITY_AUTH_CRYPTAUTH_CLIENT_H