Revert of Move remote_db_manager into the safe_browsing_db component.

chrome/browser/safe_browsing/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 CHROME_BROWSER_SAFE_BROWSING_REMOTE_DATABASE_MANAGER_H_
+#define CHROME_BROWSER_SAFE_BROWSING_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  // CHROME_BROWSER_SAFE_BROWSING_REMOTE_DATABASE_MANAGER_H_