bookmarks: Move BaseBookmarkModelObserver into 'bookmarks' namespace.

chrome/browser/sync/profile_sync_service_bookmark_unittest.cc

 // 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.
 
 // TODO(akalin): This file is basically just a unit test for
 // BookmarkChangeProcessor.  Write unit tests for
 // BookmarkModelAssociator separately.
 
 #include <map>
 #include <queue>
@@ skipping 254 matching lines @@
   }
 
 
   // The transaction on which everything happens.
   syncer::WriteTransaction *trans_;
 
   // The change list we construct.
   syncer::ChangeRecordList changes_;
 };
 
-class ExtensiveChangesBookmarkModelObserver : public BaseBookmarkModelObserver {
+class ExtensiveChangesBookmarkModelObserver
+    : public bookmarks::BaseBookmarkModelObserver {
  public:
   ExtensiveChangesBookmarkModelObserver()
       : started_count_(0),
         completed_count_at_started_(0),
         completed_count_(0) {}
 
   void ExtensiveBookmarkChangesBeginning(BookmarkModel* model) override {
     ++started_count_;
     completed_count_at_started_ = completed_count_;
   }
@@ skipping 1898 matching lines @@
   ExpectModelMatch();
 
   // Then simulate the add call arriving late.
   change_processor_->BookmarkNodeAdded(model_, model_->bookmark_bar_node(), 0);
   ExpectModelMatch();
 }
 
 }  // namespace
 
 }  // namespace browser_sync