HiDPI: fix action separators in toolbars

platform/platform-impl/src/com/intellij/openapi/actionSystem/impl/ActionToolbarImpl.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2014 JetBrains s.r.o.
+ * Copyright 2000-2015 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -798,10 +798,10 @@ public class ActionToolbarImpl extends JPanel implements ActionToolbar {
 
     public MySeparator() {
       if (myOrientation == SwingConstants.HORIZONTAL) {
-        mySize = new Dimension(6, 24);
+        mySize = JBUI.size(6, 24);
       }
       else {
-        mySize = new Dimension(24, 6);
+        mySize = JBUI.size(24, 6);
       }
     }