Reland: Aura: Fix crash on dragging URL into tab strip

chrome/browser/ui/views/tabs/tab_strip.h

 // Copyright (c) 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_TABS_TAB_STRIP_H_
 #define CHROME_BROWSER_UI_VIEWS_TABS_TAB_STRIP_H_
 
 #include <vector>
 
 #include "base/compiler_specific.h"
@@ skipping 238 matching lines @@
   typedef std::map<int, std::vector<Tab*> > TabsClosingMap;
 
   class RemoveTabDelegate;
 
   friend class TabDragController;
   friend class TabDragControllerTest;
 
   // Used during a drop session of a url. Tracks the position of the drop as
   // well as a window used to highlight where the drop occurs.
   struct DropInfo {
-    DropInfo(int index, bool drop_before, bool paint_down);
+    DropInfo(int drop_index,
+             bool drop_before,
+             bool point_down,
+             views::Widget* context);
     ~DropInfo();
 
     // Index of the tab to drop on. If drop_before is true, the drop should
     // occur between the tab at drop_index - 1 and drop_index.
     // WARNING: if drop_before is true it is possible this will == tab_count,
     // which indicates the drop should create a new tab at the end of the tabs.
     int drop_index;
     bool drop_before;
 
     // Direction the arrow should point in. If true, the arrow is displayed
@@ skipping 331 matching lines @@
   bool immersive_style_;
 
   // Our observers.
   typedef ObserverList<TabStripObserver> TabStripObservers;
   TabStripObservers observers_;
 
   DISALLOW_COPY_AND_ASSIGN(TabStrip);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TABS_TAB_STRIP_H_