gtk: Fold bookmark_drag.* into bookmark_drag_drop_gtk.cc

chrome/browser/ui/gtk/bookmarks/bookmark_drag.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_GTK_BOOKMARKS_BOOKMARK_DRAG_H_
-#define CHROME_BROWSER_UI_GTK_BOOKMARKS_BOOKMARK_DRAG_H_
-
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "chrome/browser/ui/gtk/custom_drag.h"
-
-class BookmarkNode;
-class Profile;
-
-// Encapsulates functionality for drags of one or more bookmarks.
-class BookmarkDrag : public CustomDrag {
- public:
-  // Creates a new BookmarkDrag, the lifetime of which is tied to the system
-  // drag.
-  static void BeginDrag(Profile* profile,
-                        const std::vector<const BookmarkNode*>& nodes);
-
- private:
-  BookmarkDrag(Profile* profile, const std::vector<const BookmarkNode*>& nodes);
-  virtual ~BookmarkDrag();
-
-  virtual void OnDragDataGet(GtkWidget* widget,
-                             GdkDragContext* context,
-                             GtkSelectionData* selection_data,
-                             guint target_type,
-                             guint time) OVERRIDE;
-
-  Profile* profile_;
-  std::vector<const BookmarkNode*> nodes_;
-
-  DISALLOW_COPY_AND_ASSIGN(BookmarkDrag);
-};
-
-#endif  // CHROME_BROWSER_UI_GTK_BOOKMARKS_BOOKMARK_DRAG_H_