sync/glue: Convert BookmarkDataTypeController to BaseBookmarkModelObserver.

chrome/browser/bookmarks/bookmark_model.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_BOOKMARKS_BOOKMARK_MODEL_H_
 #define CHROME_BROWSER_BOOKMARKS_BOOKMARK_MODEL_H_
 
 #include <set>
 #include <vector>
 
@@ skipping 216 matching lines @@
 class BookmarkModel : public content::NotificationObserver,
                       public BookmarkService,
                       public ProfileKeyedService {
  public:
   explicit BookmarkModel(Profile* profile);
   virtual ~BookmarkModel();
 
   // Invoked prior to destruction to release any necessary resources.
   virtual void Shutdown() OVERRIDE;
 
-  // Loads the bookmarks. This is called upon creation of the
-  // BookmarkModel. You need not invoke this directly.
+  // Loads the bookmarks. This is called upon creation of the BookmarkModel.
+  // You need not invoke this directly.
   void Load();
 
   // Returns true if the model finished loading.
   // This is virtual so it can be mocked.
   virtual bool IsLoaded() const;
 
+  virtual void AddObserver(BookmarkModelObserver* observer);
+  virtual void RemoveObserver(BookmarkModelObserver* observer);
+
   // Returns the root node. The 'bookmark bar' node and 'other' node are
   // children of the root node.
   const BookmarkNode* root_node() { return &root_; }
 
   // Returns the 'bookmark bar' node. This is NULL until loaded.
   const BookmarkNode* bookmark_bar_node() { return bookmark_bar_node_; }
 
   // Returns the 'other' node. This is NULL until loaded.
   const BookmarkNode* other_node() { return other_node_; }
 
@@ skipping 10 matching lines @@
            node == other_node_ ||
            node == mobile_node_;
   }
 
   Profile* profile() { return profile_; }
 
   // Returns the parent the last node was added to. This never returns NULL
   // (as long as the model is loaded).
   const BookmarkNode* GetParentForNewNodes();
 
-  void AddObserver(BookmarkModelObserver* observer);
-  void RemoveObserver(BookmarkModelObserver* observer);
-
   // Notifies the observers that an extensive set of changes is about to happen,
   // such as during import or sync, so they can delay any expensive UI updates
   // until it's finished.
   void BeginExtensiveChanges();
   void EndExtensiveChanges();
 
   // Returns true if this bookmark model is currently in a mode where extensive
   // changes might happen, such as for import and sync. This is helpful for
   // observers that are created after the mode has started, and want to check
   // state during their own initializer, such as the NTP.
@@ skipping 237 matching lines @@
 
   // See description of IsDoingExtensiveChanges above.
   int extensive_changes_;
 
   scoped_ptr<BookmarkExpandedStateTracker> expanded_state_tracker_;
 
   DISALLOW_COPY_AND_ASSIGN(BookmarkModel);
 };
 
 #endif  // CHROME_BROWSER_BOOKMARKS_BOOKMARK_MODEL_H_