Add 'Dump Database' tab to syncfs-internals (only for v2 for now)

chrome/browser/sync_file_system/drive_backend/metadata_database.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 CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_METADATA_DATABASE_H_
 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_METADATA_DATABASE_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 116 matching lines @@
                      const CreateCallback& callback);
   ~MetadataDatabase();
 
   int64 GetLargestFetchedChangeID() const;
   int64 GetSyncRootTrackerID() const;
   bool HasSyncRoot() const;
 
   // Returns all file metadata for the given |app_id|.
   scoped_ptr<base::ListValue> DumpFiles(const std::string& app_id);
 
+  // Returns all database data.
+  scoped_ptr<base::ListValue> DumpDatabase();
+
   // TODO(tzik): Move GetLargestKnownChangeID() to private section, and hide its
   // handling in the class, instead of letting user do.
   //
   // Gets / updates the largest known change ID.
   // The largest known change ID is on-memory and not persist over restart.
   // This is supposed to use when a task fetches ChangeList in parallel to other
   // operation.  When a task starts fetching paged ChangeList one by one, it
   // should update the largest known change ID on the first round and background
   // remaining fetch job.
   // Then, when other tasks that update FileMetadata by UpdateByFileResource,
@@ skipping 72 matching lines @@
   bool FindTrackersByParentAndTitle(
       int64 parent_tracker_id,
       const std::string& title,
       TrackerSet* trackers) const;
 
   // Builds the file path for the given tracker.  Returns true on success.
   // |path| can be NULL.
   // The file path is relative to app-root and have a leading path separator.
   bool BuildPathForTracker(int64 tracker_id, base::FilePath* path) const;
 
+  // Builds the file path for the given tracker for display purpose.
+  // This may return a path ending with '<unknown>' if the given tracker does
+  // not have title information (yet). This may return an empty path.
+  base::FilePath BuildDisplayPathForTracker(const FileTracker& tracker) const;
+
   // Returns false if no registered app exists associated to |app_id|.
   // If |full_path| is active, assigns the tracker of |full_path| to |tracker|.
   // Otherwise, assigns the nearest active ancestor to |full_path| to |tracker|.
   // Also, assigns the full path of |tracker| to |path|.
   bool FindNearestActiveAncestor(const std::string& app_id,
                                  const base::FilePath& full_path,
                                  FileTracker* tracker,
                                  base::FilePath* path) const;
 
   // Updates database by |changes|.
@@ skipping 156 matching lines @@
 
   void UpdateByFileMetadata(const tracked_objects::Location& from_where,
                             scoped_ptr<FileMetadata> file,
                             leveldb::WriteBatch* batch);
 
   void WriteToDatabase(scoped_ptr<leveldb::WriteBatch> batch,
                        const SyncStatusCallback& callback);
 
   bool HasNewerFileMetadata(const std::string& file_id, int64 change_id);
 
+  scoped_ptr<base::ListValue> DumpTrackers();
+  scoped_ptr<base::ListValue> DumpMetadata();
+
   scoped_refptr<base::SequencedTaskRunner> task_runner_;
   scoped_ptr<leveldb::DB> db_;
 
   scoped_ptr<ServiceMetadata> service_metadata_;
   int64 largest_known_change_id_;
 
   FileByID file_by_id_;  // Owned.
   TrackerByID tracker_by_id_;  // Owned.
 
   // Maps FileID to trackers.  The active tracker must be unique per FileID.
@@ skipping 20 matching lines @@
 
   base::WeakPtrFactory<MetadataDatabase> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MetadataDatabase);
 };
 
 }  // namespace drive_backend
 }  // namespace sync_file_system
 
 #endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_METADATA_DATABASE_H_