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

content/browser/web_contents/web_contents_view_aura.cc

Index: content/browser/web_contents/web_contents_view_aura.cc
diff --git a/content/browser/web_contents/web_contents_view_aura.cc b/content/browser/web_contents/web_contents_view_aura.cc
index 68481ad242315562d5a31920a8f77adb53982bc7..a2a0fe1c880ddaab891054aebddce6c42bf10764 100644
--- a/content/browser/web_contents/web_contents_view_aura.cc
+++ b/content/browser/web_contents/web_contents_view_aura.cc
@@ -61,7 +61,6 @@
 #include "ui/base/clipboard/clipboard.h"
 #include "ui/base/clipboard/custom_data_helper.h"
 #include "ui/base/dragdrop/drag_drop_types.h"
-#include "ui/base/dragdrop/drag_utils.h"
 #include "ui/base/dragdrop/drop_target_event.h"
 #include "ui/base/dragdrop/os_exchange_data.h"
 #include "ui/base/dragdrop/os_exchange_data_provider_factory.h"
@@ -974,7 +973,7 @@ void WebContentsViewAura::StartDragging(
       std::move(provider));  // takes ownership of |provider|.
 
   if (!image.isNull())
-    drag_utils::SetDragImageOnDataObject(image, image_offset, &data);
+    data.provider().SetDragImage(image, image_offset);
 
   std::unique_ptr<WebDragSourceAura> drag_source(
       new WebDragSourceAura(GetNativeView(), web_contents_));