Revert of Move sqlite_channel_id_store from chrome/browser/net to net/extras.

chrome/browser/net/sqlite_channel_id_store.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 CHROME_BROWSER_NET_SQLITE_CHANNEL_ID_STORE_H_
+#define CHROME_BROWSER_NET_SQLITE_CHANNEL_ID_STORE_H_
+
+#include "base/callback_forward.h"
+#include "base/compiler_specific.h"
+#include "base/memory/ref_counted.h"
+#include "net/ssl/default_channel_id_store.h"
+
+namespace base {
+class FilePath;
+class SequencedTaskRunner;
+}
+
+namespace quota {
+class SpecialStoragePolicy;
+}
+
+// Implements the net::DefaultChannelIDStore::PersistentStore interface
+// in terms of a SQLite database. For documentation about the actual member
+// functions consult the documentation of the parent class
+// |net::DefaultChannelIDStore::PersistentCertStore|.
+// If provided, a |SpecialStoragePolicy| is consulted when the SQLite database
+// is closed to decide which certificates to keep.
+class SQLiteChannelIDStore
+    : public net::DefaultChannelIDStore::PersistentStore {
+ public:
+  SQLiteChannelIDStore(
+      const base::FilePath& path,
+      const scoped_refptr<base::SequencedTaskRunner>& background_task_runner,
+      quota::SpecialStoragePolicy* special_storage_policy);
+
+  // net::DefaultChannelIDStore::PersistentStore:
+  virtual void Load(const LoadedCallback& loaded_callback) OVERRIDE;
+  virtual void AddChannelID(
+      const net::DefaultChannelIDStore::ChannelID& channel_id) OVERRIDE;
+  virtual void DeleteChannelID(
+      const net::DefaultChannelIDStore::ChannelID& channel_idx) OVERRIDE;
+  virtual void SetForceKeepSessionState() OVERRIDE;
+
+ protected:
+  virtual ~SQLiteChannelIDStore();
+
+ private:
+  class Backend;
+
+  scoped_refptr<Backend> backend_;
+
+  DISALLOW_COPY_AND_ASSIGN(SQLiteChannelIDStore);
+};
+
+#endif  // CHROME_BROWSER_NET_SQLITE_CHANNEL_ID_STORE_H_