bookmarks: Move BaseBookmarkModelObserver into 'bookmarks' namespace.

chrome/browser/extensions/api/bookmarks/bookmarks_api.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_EXTENSIONS_API_BOOKMARKS_BOOKMARKS_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_BOOKMARKS_BOOKMARKS_API_H_
 
 #include <list>
 #include <string>
 #include <vector>
@@ skipping 96 matching lines @@
   static const char* service_name() {
     return "BookmarksAPI";
   }
   static const bool kServiceIsNULLWhileTesting = true;
 
   // Created lazily upon OnListenerAdded.
   scoped_ptr<BookmarkEventRouter> bookmark_event_router_;
 };
 
 class BookmarksFunction : public ChromeAsyncExtensionFunction,
-                          public BaseBookmarkModelObserver {
+                          public bookmarks::BaseBookmarkModelObserver {
  public:
   // AsyncExtensionFunction:
   bool RunAsync() override;
 
  protected:
   ~BookmarksFunction() override {}
 
   // RunAsync semantic equivalent called when the bookmarks are ready.
   virtual bool RunOnReady() = 0;
 
@@ skipping 24 matching lines @@
   // error_ to the appropriate error string.
   bool EditBookmarksEnabled();
 
   // Helper that checks if |node| can be modified. Returns false if |node|
   // is NULL, or a managed node, or the root node. In these cases the node
   // can't be edited, can't have new child nodes appended, and its direct
   // children can't be moved or reordered.
   bool CanBeModified(const BookmarkNode* node);
 
  private:
-  // BaseBookmarkModelObserver:
+  // bookmarks::BaseBookmarkModelObserver:
   void BookmarkModelChanged() override;
   void BookmarkModelLoaded(BookmarkModel* model, bool ids_reassigned) override;
 
   void RunAndSendResponse();
 };
 
 class BookmarksGetFunction : public BookmarksFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("bookmarks.get", BOOKMARKS_GET)
 
@@ skipping 179 matching lines @@
  private:
   ~BookmarksExportFunction() override {}
 
   // BookmarksFunction:
   bool RunOnReady() override;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_BOOKMARKS_BOOKMARKS_API_H_