Moved JsonPrefStore to use SequencedWorkerPool

chrome/browser/bookmarks/bookmark_storage.h

 // Copyright (c) 2011 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_BOOKMARKS_BOOKMARK_STORAGE_H_
 #define CHROME_BROWSER_BOOKMARKS_BOOKMARK_STORAGE_H_
 
 #include "base/files/important_file_writer.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/bookmarks/bookmark_index.h"
 
 class BookmarkModel;
 class BookmarkPermanentNode;
 
+namespace base {
+class SequencedTaskRunner;
+}
+
 namespace content {
 class BrowserContext;
 }
 
 // BookmarkLoadDetails is used by BookmarkStorage when loading bookmarks.
 // BookmarkModel creates a BookmarkLoadDetails and passes it (including
 // ownership) to BookmarkStorage. BookmarkStorage loads the bookmarks (and
 // index) in the background thread, then calls back to the BookmarkModel (on
 // the main thread) when loading is done, passing ownership back to the
 // BookmarkModel. While loading BookmarkModel does not maintain references to
@@ skipping 69 matching lines @@
 
 // BookmarkStorage handles reading/write the bookmark bar model. The
 // BookmarkModel uses the BookmarkStorage to load bookmarks from disk, as well
 // as notifying the BookmarkStorage every time the model changes.
 //
 // Internally BookmarkStorage uses BookmarkCodec to do the actual read/write.
 class BookmarkStorage : public base::ImportantFileWriter::DataSerializer,
                         public base::RefCountedThreadSafe<BookmarkStorage> {
  public:
   // Creates a BookmarkStorage for the specified model
-  BookmarkStorage(content::BrowserContext* context, BookmarkModel* model);
+  BookmarkStorage(content::BrowserContext* context,
+                  BookmarkModel* model,
+                  base::SequencedTaskRunner* sequenced_task_runner);
 
   // Loads the bookmarks into the model, notifying the model when done. This
   // takes ownership of |details|. See BookmarkLoadDetails for details.
   void LoadBookmarks(BookmarkLoadDetails* details);
 
   // Schedules saving the bookmark bar model to disk.
   void ScheduleSave();
 
   // Notification the bookmark bar model is going to be deleted. If there is
   // a pending save, it is saved immediately.
@@ skipping 16 matching lines @@
 
   // The model. The model is NULL once BookmarkModelDeleted has been invoked.
   BookmarkModel* model_;
 
   // Helper to write bookmark data safely.
   base::ImportantFileWriter writer_;
 
   // See class description of BookmarkLoadDetails for details on this.
   scoped_ptr<BookmarkLoadDetails> details_;
 
+  // Sequenced task runner where file I/O operations will be performed at.
+  scoped_refptr<base::SequencedTaskRunner> sequenced_task_runner_;
+
   DISALLOW_COPY_AND_ASSIGN(BookmarkStorage);
 };
 
 #endif  // CHROME_BROWSER_BOOKMARKS_BOOKMARK_STORAGE_H_