Fix dragging supported files to 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 164 matching lines @@
   void SetImmersiveStyle(bool enable);
 
   // Returns true if Tabs in this TabStrip are currently changing size or
   // position.
   bool IsAnimating() const;
 
   // Stops any ongoing animations. If |layout| is true and an animation is
   // ongoing this does a layout.
   void StopAnimating(bool layout);
 
+  // Called to indicate whether the given URL is a supported file.
+  void FileSupported(const GURL& url, bool supported);
+
   // TabController overrides:
   virtual const ui::ListSelectionModel& GetSelectionModel() OVERRIDE;
   virtual bool SupportsMultipleSelection() OVERRIDE;
   virtual void SelectTab(Tab* tab) OVERRIDE;
   virtual void ExtendSelectionTo(Tab* tab) OVERRIDE;
   virtual void ToggleSelected(Tab* tab) OVERRIDE;
   virtual void AddSelectionFromAnchorTo(Tab* tab) OVERRIDE;
   virtual void CloseTab(Tab* tab, CloseTabSource source) OVERRIDE;
   virtual void ShowContextMenuForTab(Tab* tab,
                                      const gfx::Point& p,
@@ skipping 93 matching lines @@
 
     // Direction the arrow should point in. If true, the arrow is displayed
     // above the tab and points down. If false, the arrow is displayed beneath
     // the tab and points up.
     bool point_down;
 
     // Renders the drop indicator.
     views::Widget* arrow_window;
     views::ImageView* arrow_view;
 
+    // The URL for the drop event.
+    GURL url;
+
+    // Whether the MIME type of the file pointed to by |url| is supported.
+    bool file_supported;
+
    private:
     DISALLOW_COPY_AND_ASSIGN(DropInfo);
   };
 
   void Init();
 
   // Creates and returns a new tab. The caller owners the returned tab.
   Tab* CreateTab();
 
   // Invoked from |AddTabAt| after the newly created tab has been inserted.
@@ skipping 320 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_