Revert of Move remote_db_manager into the safe_browsing_db component.

components/safe_browsing_db/remote_database_manager.h

-// Copyright 2015 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.
-//
-// Implementation of the SafeBrowsingDatabaseManager that sends URLs
-// via IPC to a database that chromium doesn't manage locally.
-
-#ifndef COMPONENTS_SAFE_BROWSING_DB_REMOTE_DATABASE_MANAGER_H_
-#define COMPONENTS_SAFE_BROWSING_DB_REMOTE_DATABASE_MANAGER_H_
-
-#include <set>
-#include <string>
-#include <vector>
-
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/weak_ptr.h"
-#include "components/safe_browsing_db/database_manager.h"
-#include "url/gurl.h"
-
-namespace safe_browsing {
-
-// An implementation that proxies requests to a service outside of Chromium.
-// Does not manage a local database.
-class RemoteSafeBrowsingDatabaseManager : public SafeBrowsingDatabaseManager {
- public:
-  // Construct RemoteSafeBrowsingDatabaseManager.
-  // Must be initialized by calling StartOnIOThread() before using.
-  RemoteSafeBrowsingDatabaseManager();
-
-  //
-  // SafeBrowsingDatabaseManager implementation
-  //
-
-  bool IsSupported() const override;
-  safe_browsing::ThreatSource GetThreatSource() const override;
-  bool ChecksAreAlwaysAsync() const override;
-  bool CanCheckResourceType(content::ResourceType resource_type) const override;
-  bool CanCheckUrl(const GURL& url) const override;
-  bool download_protection_enabled() const override;
-  bool CheckBrowseUrl(const GURL& url, Client* client) override;
-  void CancelCheck(Client* client) override;
-  void StartOnIOThread() override;
-  void StopOnIOThread(bool shutdown) override;
-
-  // These will fail with DCHECK() since their functionality isn't implemented.
-  // We may later add support for a subset of them.
-  bool CheckDownloadUrl(const std::vector<GURL>& url_chain,
-                        Client* client) override;
-  bool CheckExtensionIDs(const std::set<std::string>& extension_ids,
-                         Client* client) override;
-  bool MatchCsdWhitelistUrl(const GURL& url) override;
-  bool MatchMalwareIP(const std::string& ip_address) override;
-  bool MatchDownloadWhitelistUrl(const GURL& url) override;
-  bool MatchDownloadWhitelistString(const std::string& str) override;
-  bool MatchInclusionWhitelistUrl(const GURL& url) override;
-  bool IsMalwareKillSwitchOn() override;
-  bool IsCsdWhitelistKillSwitchOn() override;
-
-  //
-  // RemoteSafeBrowsingDatabaseManager implementation
-  //
-
- private:
-  ~RemoteSafeBrowsingDatabaseManager() override;
-  class ClientRequest;  // Per-request tracker.
-
-  // Requests currently outstanding.  This owns the ptrs.
-  std::vector<ClientRequest*> current_requests_;
-  bool enabled_;
-
-  std::set<content::ResourceType> resource_types_to_check_;
-
-  friend class base::RefCountedThreadSafe<RemoteSafeBrowsingDatabaseManager>;
-  DISALLOW_COPY_AND_ASSIGN(RemoteSafeBrowsingDatabaseManager);
-};  // class RemoteSafeBrowsingDatabaseManager
-
-}  // namespace safe_browsing
-
-#endif  // COMPONENTS_SAFE_BROWSING_DB_REMOTE_DATABASE_MANAGER_H_