bookmarks: Extract PerformBookmarkDrop() function out of bookmark_utils.h

chrome/browser/ui/views/bookmarks/bookmark_drag_drop_views.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_UI_VIEWS_BOOKMARKS_BOOKMARK_DRAG_DROP_H_
-#define CHROME_BROWSER_UI_VIEWS_BOOKMARKS_BOOKMARK_DRAG_DROP_H_
+#ifndef CHROME_BROWSER_UI_VIEWS_BOOKMARKS_BOOKMARK_DRAG_DROP_VIEWS_H_
+#define CHROME_BROWSER_UI_VIEWS_BOOKMARKS_BOOKMARK_DRAG_DROP_VIEWS_H_
 
 class BookmarkNode;
 struct BookmarkNodeData;
 class Profile;
 
 namespace content {
 class BrowserContext;
 }
 
 namespace ui {
@@ skipping 25 matching lines @@
 // a drop from the same profile is only allowed if none of the nodes in
 // |data| are an ancestor of |drop_parent| and one of the nodes isn't already
 // a child of |drop_parent| at |index|.
 bool IsValidBookmarkDropLocation(Profile* profile,
                                  const BookmarkNodeData& data,
                                  const BookmarkNode* drop_parent,
                                  int index);
 
 }  // namespace chrome
 
-#endif  // CHROME_BROWSER_UI_VIEWS_BOOKMARKS_BOOKMARK_DRAG_DROP_H_
+#endif  // CHROME_BROWSER_UI_VIEWS_BOOKMARKS_BOOKMARK_DRAG_DROP_VIEWS_H_