gtk: Fold bookmark_drag.* into bookmark_drag_drop_gtk.cc

chrome/browser/ui/gtk/bookmarks/bookmark_drag.cc

-// 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.
-
-#include "chrome/browser/ui/gtk/bookmarks/bookmark_drag.h"
-
-#include "chrome/browser/ui/gtk/bookmarks/bookmark_utils_gtk.h"
-
-namespace {
-
-const GdkDragAction kBookmarkDragAction =
-    static_cast<GdkDragAction>(GDK_ACTION_COPY | GDK_ACTION_MOVE);
-
-}  // namespace
-
-// static
-void BookmarkDrag::BeginDrag(Profile* profile,
-                             const std::vector<const BookmarkNode*>& nodes) {
-  new BookmarkDrag(profile, nodes);
-}
-
-BookmarkDrag::BookmarkDrag(Profile* profile,
-                           const std::vector<const BookmarkNode*>& nodes)
-    : CustomDrag(NULL, GetCodeMask(false), kBookmarkDragAction),
-      profile_(profile),
-      nodes_(nodes) {}
-
-BookmarkDrag::~BookmarkDrag() {}
-
-void BookmarkDrag::OnDragDataGet(GtkWidget* widget,
-                                 GdkDragContext* context,
-                                 GtkSelectionData* selection_data,
-                                 guint target_type,
-                                 guint time) {
-  WriteBookmarksToSelection(nodes_, selection_data, target_type, profile_);
-}