Implemented drop hander for the Home toolbar button that accepts (only) links

chrome/browser/ui/views/home_button.h

+// Copyright (c) 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_VIEWS_HOME_BUTTON_H_
+#define CHROME_BROWSER_UI_VIEWS_HOME_BUTTON_H_
+
+#include <set>
+
+#include "ui/views/controls/button/image_button.h"
+
+class Browser;
+
+class HomeImageButton : public views::ImageButton {
+ public:
+  HomeImageButton(views::ButtonListener* listener, Browser* browser);
+  virtual ~HomeImageButton();
+
+  // views::ImageButton:
+  virtual bool GetDropFormats(
+      int* formats,
+      std::set<OSExchangeData::CustomFormat>* custom_formats) OVERRIDE;
+  virtual bool CanDrop(const OSExchangeData& data) OVERRIDE;
+  virtual int OnDragUpdated(const ui::DropTargetEvent& event) OVERRIDE;
+  virtual int OnPerformDrop(const ui::DropTargetEvent& event) OVERRIDE;
+
+ private:
+  Browser* browser_;
+
+  DISALLOW_COPY_AND_ASSIGN(HomeImageButton);
+};
+
+#endif  // CHROME_BROWSER_UI_VIEWS_HOME_BUTTON_H__