gtk: Fold bookmark_drag.* into bookmark_drag_drop_gtk.cc

chrome/browser/ui/gtk/download/download_item_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/download/download_item_drag.h"
 
 #include "base/files/file_path.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/download/drag_download_item.h"
 #include "content/public/browser/download_item.h"
@@ skipping 91 matching lines @@
 // DownloadItemDrag ------------------------------------------------------------
 
 // static
 void DownloadItemDrag::SetSource(GtkWidget* widget,
                                  const DownloadItem* item,
                                  gfx::Image* icon) {
   scoped_ptr<DragData> drag_data(new DragData(item));
   DragData::AttachToWidget(drag_data.Pass(), widget, icon);
 }
 
-// static
-void DownloadItemDrag::BeginDrag(const DownloadItem* item, gfx::Image* icon) {
-  new DownloadItemDrag(item, icon);
-}
-
 DownloadItemDrag::DownloadItemDrag(const DownloadItem* item, gfx::Image* icon)
     : CustomDrag(icon, kDownloadItemCodeMask, kDownloadItemDragAction),
       drag_data_(new DragData(item)) {}
 
 DownloadItemDrag::~DownloadItemDrag() {}
 
 void DownloadItemDrag::OnDragDataGet(GtkWidget* widget,
                                      GdkDragContext* context,
                                      GtkSelectionData* selection_data,
                                      guint target_type,
                                      guint time) {
   drag_data_->OnDragDataGet(widget, context, selection_data, target_type, time);
 }
 
 void DragDownloadItem(const content::DownloadItem* download,
                       gfx::Image* icon,
                       gfx::NativeView view) {
-  DownloadItemDrag::BeginDrag(download, icon);
+  // This starts the drag process, the lifetime of this object is tied to the
+  // system drag.
+  new DownloadItemDrag(download, icon);
 }