Add IndexedDBBlobInfo class, to be used for IDB Blob support.

content/browser/indexed_db/indexed_db_blob_info.h

+// Copyright (c) 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 CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_BLOB_INFO_H_
+#define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_BLOB_INFO_H_
+
+#include "base/callback.h"
+#include "base/files/file_path.h"
+#include "base/time/time.h"
+#include "webkit/common/blob/shareable_file_reference.h"
+
+namespace content {
+
+class IndexedDBBlobInfo {
+ public:
+  typedef webkit_blob::ShareableFileReference::FinalReleaseCallback
+      ReleaseCallback;
+  IndexedDBBlobInfo();
+  ~IndexedDBBlobInfo();
+  // These two are used for Blobs.
+  IndexedDBBlobInfo(const std::string& uuid,
+                    const base::string16& type,
+                    int64 size);
+  IndexedDBBlobInfo(const base::string16& type, int64 size, int64 key);
+  // These two are used for Files.
+  IndexedDBBlobInfo(const base::FilePath& file_path,
+                    const base::string16& file_name,
+                    const base::string16& type);
+  IndexedDBBlobInfo(int64 key,
+                    const base::string16& type,
+                    const base::string16& file_name);
+
+  bool is_file() const { return is_file_; }
+  const std::string& uuid() const { return uuid_; }
+  const base::string16& type() const { return type_; }
+  int64 size() const { return size_; }
+  const base::string16& file_name() const { return file_name_; }
+  int64 key() const { return key_; }
+  const base::FilePath& file_path() const { return file_path_; }
+  const base::Time& last_modified() const { return last_modified_; }
+  const base::Closure& mark_used_callback() const {
+    return mark_used_callback_;
+  }
+  const ReleaseCallback& release_callback() const { return release_callback_; }
+
+  void set_size(int64 size);
+  void set_uuid(const std::string& uuid);
+  void set_file_path(const base::FilePath& file_path);
+  void set_last_modified(const base::Time& time);
+  void set_key(int64 key);
+  void set_mark_used_callback(const base::Closure& mark_used_callback);
+  void set_release_callback(const ReleaseCallback& release_callback);
+
+ private:
+  bool is_file_;
+  std::string uuid_;          // Always for Blob; sometimes for File.
+  base::string16 type_;       // Mime type.
+  int64 size_;                // -1 if unknown for File.
+  base::string16 file_name_;  // Only for File.
+  base::FilePath file_path_;  // Only for File.
+  base::Time last_modified_;  // Only for File; valid only if size is.
+
+  // Valid only when this comes out of the database.
+  int64 key_;
+  base::Closure mark_used_callback_;
+  ReleaseCallback release_callback_;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_BLOB_INFO_H_