Move chrome/browser/chromeos/drive/resource* (+deps) into components/drive.

chrome/browser/chromeos/drive/resource_metadata.h

-// Copyright (c) 2012 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_CHROMEOS_DRIVE_RESOURCE_METADATA_H_
-#define CHROME_BROWSER_CHROMEOS_DRIVE_RESOURCE_METADATA_H_
-
-#include <set>
-#include <string>
-#include <vector>
-
-#include "base/files/file_path.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/threading/thread_checker.h"
-#include "chrome/browser/chromeos/drive/resource_metadata_storage.h"
-#include "components/drive/file_errors.h"
-
-namespace base {
-class SequencedTaskRunner;
-}
-
-namespace drive {
-
-typedef std::vector<ResourceEntry> ResourceEntryVector;
-
-namespace internal {
-
-class FileCache;
-
-// Storage for Drive Metadata.
-// All methods except the constructor and Destroy() function must be run with
-// |blocking_task_runner| unless otherwise noted.
-class ResourceMetadata {
- public:
-  typedef ResourceMetadataStorage::Iterator Iterator;
-
-  ResourceMetadata(
-      ResourceMetadataStorage* storage,
-      FileCache* cache,
-      scoped_refptr<base::SequencedTaskRunner> blocking_task_runner);
-
-  // Initializes this object.
-  // This method should be called before any other methods.
-  FileError Initialize() WARN_UNUSED_RESULT;
-
-  // Destroys this object.  This method posts a task to |blocking_task_runner_|
-  // to safely delete this object.
-  // Must be called on the UI thread.
-  void Destroy();
-
-  // Resets this object.
-  FileError Reset();
-
-  // Returns the largest changestamp.
-  FileError GetLargestChangestamp(int64* out_value);
-
-  // Sets the largest changestamp.
-  FileError SetLargestChangestamp(int64 value);
-
-  // Adds |entry| to the metadata tree based on its parent_local_id.
-  FileError AddEntry(const ResourceEntry& entry, std::string* out_id);
-
-  // Removes entry with |id| from its parent.
-  FileError RemoveEntry(const std::string& id);
-
-  // Finds an entry (a file or a directory) by |id|.
-  FileError GetResourceEntryById(const std::string& id,
-                                 ResourceEntry* out_entry);
-
-  // Synchronous version of GetResourceEntryByPathOnUIThread().
-  FileError GetResourceEntryByPath(const base::FilePath& file_path,
-                                   ResourceEntry* out_entry);
-
-  // Finds and reads a directory by |file_path|.
-  FileError ReadDirectoryByPath(const base::FilePath& file_path,
-                                ResourceEntryVector* out_entries);
-
-  // Finds and reads a directory by |id|.
-  FileError ReadDirectoryById(const std::string& id,
-                              ResourceEntryVector* out_entries);
-
-  // Replaces an existing entry with the same local ID as |entry|.
-  FileError RefreshEntry(const ResourceEntry& entry);
-
-  // Recursively gets directories under the entry pointed to by |id|.
-  FileError GetSubDirectoriesRecursively(
-      const std::string& id,
-      std::set<base::FilePath>* sub_directories);
-
-  // Returns the id of the resource named |base_name| directly under
-  // the directory with |parent_local_id|.
-  // If not found, empty string will be returned.
-  FileError GetChildId(const std::string& parent_local_id,
-                       const std::string& base_name,
-                       std::string* out_child_id);
-
-  // Returns an object to iterate over entries.
-  scoped_ptr<Iterator> GetIterator();
-
-  // Returns virtual file path of the entry.
-  FileError GetFilePath(const std::string& id, base::FilePath* out_file_path);
-
-  // Returns ID of the entry at the given path.
-  FileError GetIdByPath(const base::FilePath& file_path, std::string* out_id);
-
-  // Returns the local ID associated with the given resource ID.
-  FileError GetIdByResourceId(const std::string& resource_id,
-                              std::string* out_local_id);
-
- private:
-  // Note: Use Destroy() to delete this object.
-  ~ResourceMetadata();
-
-  // Sets up entries which should be present by default.
-  FileError SetUpDefaultEntries();
-
-  // Used to implement Destroy().
-  void DestroyOnBlockingPool();
-
-  // Puts an entry under its parent directory. Removes the child from the old
-  // parent if there is. This method will also do name de-duplication to ensure
-  // that the exposed presentation path does not have naming conflicts. Two
-  // files with the same name "Foo" will be renamed to "Foo (1)" and "Foo (2)".
-  FileError PutEntryUnderDirectory(const ResourceEntry& entry);
-
-  // Returns an unused base name for |entry|.
-  FileError GetDeduplicatedBaseName(const ResourceEntry& entry,
-                                    std::string* base_name);
-
-  // Removes the entry and its descendants.
-  FileError RemoveEntryRecursively(const std::string& id);
-
-  scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
-
-  ResourceMetadataStorage* storage_;
-  FileCache* cache_;
-
-  base::ThreadChecker thread_checker_;
-
-  DISALLOW_COPY_AND_ASSIGN(ResourceMetadata);
-};
-
-}  // namespace internal
-}  // namespace drive
-
-#endif  // CHROME_BROWSER_CHROMEOS_DRIVE_RESOURCE_METADATA_H_