Delete ash-based code for Windows drag-and-drop graphics.

ui/base/dragdrop/os_exchange_data.h

Index: ui/base/dragdrop/os_exchange_data.h
diff --git a/ui/base/dragdrop/os_exchange_data.h b/ui/base/dragdrop/os_exchange_data.h
index 683197de275155f86cc1006e2747d221abd83d19..414733a6a6b6154113b4674ead4fdf4f17323880 100644
--- a/ui/base/dragdrop/os_exchange_data.h
+++ b/ui/base/dragdrop/os_exchange_data.h
@@ -130,7 +130,7 @@ class UI_BASE_EXPORT OSExchangeData {
     virtual bool HasHtml() const = 0;
 #endif
 
-#if defined(USE_AURA) || defined(OS_MACOSX)
+#if (defined(USE_AURA) && !defined(OS_WIN)) || defined(OS_MACOSX)

[danakj, 2017/04/03 22:34:01]

I took them out of the interface on WIN which I think is what we want.. bots
will show..

[Peter Kasting, 2017/04/04 00:31:14]

Maybe this whole #if should be USE_ASH instead?

[sadrul, 2017/04/04 04:16:14]

We do use this on desktop-linux. So maybe just (OS_LINUX || OS_MACOSX)

[danakj, 2017/04/04 15:33:37]

Done.

     virtual void SetDragImage(const gfx::ImageSkia& image,
                               const gfx::Vector2d& cursor_offset) = 0;
     virtual const gfx::ImageSkia& GetDragImage() const = 0;