Make SVG images for custom CSS cursors appear sharp on retina displays

Source/core/platform/chromium/support/WebCursorInfo.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 28 matching lines @@
 
 WebCursorInfo::WebCursorInfo(const Cursor& cursor)
     : type(static_cast<Type>(cursor.type()))
     , hotSpot(cursor.hotSpot())
     , imageScaleFactor(cursor.imageScaleFactor())
     , customImage(cursor.image())
 #ifdef WIN32
     , externalHandle(0)
 #endif
 {
+    if (cursor.image()) {
+        float hintedScale = customImage.getSkBitmap().width() / (float)cursor.image()->width();
+        imageScaleFactor *= hintedScale;
+        hotSpot = WebPoint(hotSpot.x * hintedScale, hotSpot.y * hintedScale);
+    }
 }
 
 } // namespace blink