[Sync] Move attachments code out of core/.

components/sync/core/attachments/attachment_uploader_impl.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_SYNC_CORE_ATTACHMENTS_ATTACHMENT_UPLOADER_IMPL_H_
-#define COMPONENTS_SYNC_CORE_ATTACHMENTS_ATTACHMENT_UPLOADER_IMPL_H_
-
-#include <stdint.h>
-
-#include <memory>
-#include <string>
-#include <unordered_map>
-
-#include "base/macros.h"
-#include "base/threading/non_thread_safe.h"
-#include "components/sync/base/model_type.h"
-#include "components/sync/core/attachments/attachment_uploader.h"
-#include "google_apis/gaia/oauth2_token_service_request.h"
-#include "net/url_request/url_request_context_getter.h"
-
-class GURL;
-
-namespace net {
-class URLRequestContextGetter;
-}  // namespace net
-
-namespace syncer {
-
-// An implementation of AttachmentUploader.
-class AttachmentUploaderImpl : public AttachmentUploader,
-                               public base::NonThreadSafe {
- public:
-  // |sync_service_url| is the URL of the sync service.
-  //
-  // |url_request_context_getter| provides a URLRequestContext.
-  //
-  // |account_id| is the account id to use for uploads.
-  //
-  // |scopes| is the set of scopes to use for uploads.
-  //
-  // |token_service_provider| provides an OAuth2 token service.
-  //
-  // |store_birthday| is the raw, sync store birthday.
-  //
-  // |model_type| is the model type this uploader is used with.
-  AttachmentUploaderImpl(
-      const GURL& sync_service_url,
-      const scoped_refptr<net::URLRequestContextGetter>&
-          url_request_context_getter,
-      const std::string& account_id,
-      const OAuth2TokenService::ScopeSet& scopes,
-      const scoped_refptr<OAuth2TokenServiceRequest::TokenServiceProvider>&
-          token_service_provider,
-      const std::string& store_birthday,
-      ModelType model_type);
-  ~AttachmentUploaderImpl() override;
-
-  // AttachmentUploader implementation.
-  void UploadAttachment(const Attachment& attachment,
-                        const UploadCallback& callback) override;
-
-  // Return the URL for the given |sync_service_url| and |attachment_id|.
-  static GURL GetURLForAttachmentId(const GURL& sync_service_url,
-                                    const AttachmentId& attachment_id);
-
-  // Format crc32c to pass into X-Goog-Hash header.
-  //
-  // The value is base64 encoded, big-endian format.  Suitable for use in the
-  // X-Goog-Hash header
-  // (https://cloud.google.com/storage/docs/reference-headers#xgooghash).
-  static std::string FormatCrc32cHash(uint32_t crc32c);
-
-  // Apply common settings to |fetcher|, suitable for both uploads and
-  // downloads.
-  static void ConfigureURLFetcherCommon(
-      net::URLFetcher* fetcher,
-      const std::string& auth_token,
-      const std::string& raw_store_birthday,
-      ModelType model_type,
-      net::URLRequestContextGetter* request_context_getter);
-
- private:
-  class UploadState;
-  typedef std::string UniqueId;
-  typedef std::unordered_map<UniqueId, std::unique_ptr<UploadState>> StateMap;
-
-  void OnUploadStateStopped(const UniqueId& unique_id);
-
-  GURL sync_service_url_;
-  scoped_refptr<net::URLRequestContextGetter> url_request_context_getter_;
-  std::string account_id_;
-  OAuth2TokenService::ScopeSet scopes_;
-  scoped_refptr<OAuth2TokenServiceRequest::TokenServiceProvider>
-      token_service_provider_;
-  std::string raw_store_birthday_;
-  StateMap state_map_;
-  ModelType model_type_;
-
-  // Must be last data member.
-  base::WeakPtrFactory<AttachmentUploaderImpl> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(AttachmentUploaderImpl);
-};
-
-}  // namespace syncer
-
-#endif  // COMPONENTS_SYNC_CORE_ATTACHMENTS_ATTACHMENT_UPLOADER_IMPL_H_