Remove PeerConnectionIdentityStore and related messaging/storage code.

content/browser/media/webrtc/webrtc_identity_store_backend.h

-// Copyright 2013 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 CONTENT_BROWSER_MEDIA_WEBRTC_WEBRTC_IDENTITY_STORE_BACKEND_H_
-#define CONTENT_BROWSER_MEDIA_WEBRTC_WEBRTC_IDENTITY_STORE_BACKEND_H_
-
-#include <map>
-#include <memory>
-#include <string>
-#include <vector>
-
-#include "base/callback.h"
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/time/time.h"
-
-class GURL;
-
-namespace base {
-class FilePath;
-}  // namespace base
-
-namespace storage {
-class SpecialStoragePolicy;
-}  // namespace storage
-
-namespace content {
-
-// This class represents a persistent cache of WebRTC identities.
-// It can be created/destroyed/Close() on any thread. All other members should
-// be accessed on the IO thread.
-class WebRTCIdentityStoreBackend
-    : public base::RefCountedThreadSafe<WebRTCIdentityStoreBackend> {
- public:
-  typedef base::Callback<void(int error,
-                              const std::string& certificate,
-                              const std::string& private_key)>
-      FindIdentityCallback;
-
-  // No data is saved on disk if |path| is empty. Identites older than
-  // |validity_period| will be removed lazily.
-  WebRTCIdentityStoreBackend(const base::FilePath& path,
-                             storage::SpecialStoragePolicy* policy,
-                             base::TimeDelta validity_period);
-
-  // Finds the identity with |origin|, |identity_name|, and |common_name| from
-  // the DB.
-  // |origin| is the origin of the identity;
-  // |identity_name| is used to identify an identity within an origin;
-  // |common_name| is the common name used to generate the certificate;
-  // |callback| is the callback to return the find result.
-  // Returns true if |callback| will be called.
-  // Should be called on the IO thread.
-  bool FindIdentity(const GURL& origin,
-                    const std::string& identity_name,
-                    const std::string& common_name,
-                    const FindIdentityCallback& callback);
-
-  // Adds the identity to the DB and overwrites any existing identity having the
-  // same origin and identity_name.
-  // |origin| is the origin of the identity;
-  // |identity_name| is used to identify an identity within an origin;
-  // |common_name| is the common name used to generate the certificate;
-  // |certificate| is the DER string of the certificate;
-  // |private_key| is the DER string of the private key.
-  // Should be called on the IO thread.
-  void AddIdentity(const GURL& origin,
-                   const std::string& identity_name,
-                   const std::string& common_name,
-                   const std::string& certificate,
-                   const std::string& private_key);
-
-  // Commits all pending DB operations and closes the DB connection. Any API
-  // call after this will fail.
-  // Can be called on any thread.
-  void Close();
-
-  // Delete the data created between |delete_begin| and |delete_end|.
-  // Should be called on the IO thread.
-  void DeleteBetween(base::Time delete_begin,
-                     base::Time delete_end,
-                     const base::Closure& callback);
-
-  // Changes the validity period. Should be called before the database is
-  // loaded into memory.
-  void SetValidityPeriodForTesting(base::TimeDelta validity_period);
-
- private:
-  friend class base::RefCountedThreadSafe<WebRTCIdentityStoreBackend>;
-  class SqlLiteStorage;
-  enum LoadingState {
-    NOT_STARTED,
-    LOADING,
-    LOADED,
-    CLOSED,
-  };
-  struct PendingFindRequest;
-  struct IdentityKey;
-  struct Identity;
-  typedef std::map<IdentityKey, Identity> IdentityMap;
-
-  ~WebRTCIdentityStoreBackend();
-
-  void OnLoaded(std::unique_ptr<IdentityMap> out_map);
-
-  // Identities expires after |validity_period_|.
-  base::TimeDelta validity_period_;
-  // In-memory copy of the identities.
-  IdentityMap identities_;
-  // "Find identity" requests waiting for the DB to load.
-  std::vector<PendingFindRequest*> pending_find_requests_;
-  // The persistent storage loading state.
-  LoadingState state_;
-  // The persistent storage of identities.
-  scoped_refptr<SqlLiteStorage> sql_lite_storage_;
-
-  DISALLOW_COPY_AND_ASSIGN(WebRTCIdentityStoreBackend);
-};
-}
-
-#endif  // CONTENT_BROWSER_MEDIA_WEBRTC_WEBRTC_IDENTITY_STORE_BACKEND_H_