gtk: Fold bookmark_drag.* into bookmark_drag_drop_gtk.cc

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

 // Copyright 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.
 
 #include "chrome/browser/ui/bookmarks/bookmark_drag_drop.h"
 
-#include "chrome/browser/ui/gtk/bookmarks/bookmark_drag.h"
+#include <vector>
+
+#include "base/compiler_specific.h"
+#include "chrome/browser/ui/gtk/bookmarks/bookmark_utils_gtk.h"
+#include "chrome/browser/ui/gtk/custom_drag.h"
+
+namespace {
+
+const GdkDragAction kBookmarkDragAction =
+    static_cast<GdkDragAction>(GDK_ACTION_COPY | GDK_ACTION_MOVE);
+
+// Encapsulates functionality for drags of one or more bookmarks.
+class BookmarkDrag : public CustomDrag {
+ public:
+  BookmarkDrag(Profile* profile, const std::vector<const BookmarkNode*>& nodes);
+
+ private:
+  virtual ~BookmarkDrag() {}
+
+  virtual void OnDragDataGet(GtkWidget* widget,
+                             GdkDragContext* context,
+                             GtkSelectionData* selection_data,
+                             guint target_type,
+                             guint time) OVERRIDE {
+    WriteBookmarksToSelection(nodes_, selection_data, target_type, profile_);
+  }
+
+  Profile* profile_;
+  std::vector<const BookmarkNode*> nodes_;
+
+  DISALLOW_COPY_AND_ASSIGN(BookmarkDrag);
+};
+
+BookmarkDrag::BookmarkDrag(Profile* profile,
+                           const std::vector<const BookmarkNode*>& nodes)
+    : CustomDrag(NULL, GetCodeMask(false), kBookmarkDragAction),
+      profile_(profile),
+      nodes_(nodes) {}
+
+}  // namespace
 
 namespace chrome {
 
 void DragBookmarks(Profile* profile,
                    const std::vector<const BookmarkNode*>& nodes,
                    gfx::NativeView view) {
   DCHECK(!nodes.empty());
 
-  BookmarkDrag::BeginDrag(profile, nodes);
+  // This starts the drag process, the lifetime of this object is tied to the
+  // system drag.
+  new BookmarkDrag(profile, nodes);
 }
 
 }  // namespace chrome