Use the screen info's scale factor to scale the drag image

third_party/WebKit/Source/web/DragClientImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 51 matching lines @@
     RefPtrWillBeRawPtr<LocalFrame> frameProtector(frame);
 
     WebDragData dragData = dataTransfer->dataObject()->toWebDragData();
     WebDragOperationsMask dragOperationMask = static_cast<WebDragOperationsMask>(dataTransfer->sourceOperation());
     WebImage image;
     IntSize offsetSize(eventPos - dragImageOrigin);
     WebPoint offsetPoint(offsetSize.width(), offsetSize.height());
 
     if (dragImage) {
         float resolutionScale = dragImage->resolutionScale();
-        if (m_webView->deviceScaleFactor() != resolutionScale) {
+        float deviceScaleFactor =
+            m_webView->client()->screenInfo().deviceScaleFactor;
+        if (deviceScaleFactor != resolutionScale) {
             ASSERT(resolutionScale > 0);
-            float scale = m_webView->deviceScaleFactor() / resolutionScale;
+            float scale = deviceScaleFactor / resolutionScale;
             dragImage->scale(scale, scale);
         }
         image = dragImage->bitmap();
     }
 
     m_webView->startDragging(frame, dragData, dragOperationMask, image, offsetPoint);
 }
 
 } // namespace blink