content: Split web_drag_dest_gtk.cc into chrome/ and content/ parts.

chrome/browser/tab_contents/web_drag_bookmark_handler_gtk.h

+// Copyright (c) 2011 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_TAB_CONTENTS_WEB_DRAG_BOOKMARK_HANDLER_GTK_H_
+#define CHROME_BROWSER_TAB_CONTENTS_WEB_DRAG_BOOKMARK_HANDLER_GTK_H_
+#pragma once
+
+#include "chrome/browser/bookmarks/bookmark_node_data.h"
+#include "chrome/browser/tab_contents/web_drag_dest_gtk.h"
+
+class TabContentsWrapper;
+
+class WebDragBookmarkHandlerGtk : public WebDragBookmarkDelegate {
+ public:
+  WebDragBookmarkHandlerGtk();
+  virtual ~WebDragBookmarkHandlerGtk();
+
+  // Overridden from WebDragBookmarkDelegate:
+  virtual void DragInitialize(TabContents* contents);
+  virtual void OnReceiveDataFromGtk(GtkSelectionData* data);
+  virtual void OnReceiveProcessedData(const GURL& url,
+                                      const string16& title);
+  virtual void OnDragOver();
+  virtual void OnDragEnter();
+  virtual void OnDrop();
+  virtual void OnDragLeave();
+
+ private:
+  // The TabContentsWrapper for |tab_contents_|.
+  // Weak reference; may be NULL if the contents aren't contained in a wrapper
+  // (e.g. WebUI dialogs).
+  TabContentsWrapper* tab_;
+
+  // The bookmark data for the current tab. This will be empty if there is not
+  // a native bookmark drag (or we haven't gotten the data from the source yet).
+  BookmarkNodeData bookmark_drag_data_;
+};
+
+#endif  // CHROME_BROWSER_TAB_CONTENTS_WEB_DRAG_BOOKMARK_HANDLER_GTK_H_