IDEA-181071 context submenu arrow icon is low res on Retina

platform/platform-impl/src/com/intellij/ide/ui/laf/LafManagerImpl.java

@@ -394,19 +394,7 @@ public final class LafManagerImpl extends LafManager implements PersistentStateC
   @Nullable
   private static Icon getAquaMenuInvertedIcon() {
     if (UIUtil.isUnderAquaLookAndFeel() || (SystemInfo.isMac && UIUtil.isUnderIntelliJLaF())) {
-      final Icon arrow = (Icon)UIManager.get("Menu.arrowIcon");
-      if (arrow == null) return null;
-
-      try {
-        final Method method = ReflectionUtil.getMethod(arrow.getClass(), "getInvertedIcon");
-        if (method != null) {
-          return (Icon)method.invoke(arrow);
-        }
-        return null;
-      }
-      catch (InvocationTargetException | IllegalAccessException e1) {
-        return null;
-      }
+      return AllIcons.Mac.Tree_white_right_arrow;
     }
     return null;
   }

platform/platform-impl/src/com/intellij/ide/ui/laf/intellijlaf_mac.properties

@@ -40,6 +40,7 @@ Menu.border=com.intellij.ide.ui.laf.intellij.MacIntelliJMenuItemBorder
 PopupMenu.background=f6f6f6
 MenuItem.background=f6f6f6
 Menu.background=f6f6f6
+Menu.arrowIcon=AllIcons.Mac.Tree_black_right_arrow
 
 SplitPane.highlight=ececec
 

platform/util/src/com/intellij/icons/AllIcons.java

@@ -807,6 +807,7 @@ public class AllIcons {
   public static class Mac {
     public static final Icon AppIconOk512 = IconLoader.getIcon("/mac/appIconOk512.png"); // 55x55
     public static final Icon Text = IconLoader.getIcon("/mac/text.gif"); // 32x32
+    public static final Icon Tree_black_right_arrow = IconLoader.getIcon("/mac/tree_black_right_arrow.png"); // 11x11
     public static final Icon Tree_white_down_arrow = IconLoader.getIcon("/mac/tree_white_down_arrow.png"); // 11x11
     public static final Icon Tree_white_right_arrow = IconLoader.getIcon("/mac/tree_white_right_arrow.png"); // 11x11
     public static final Icon YosemiteOptionButtonSelector = IconLoader.getIcon("/mac/yosemiteOptionButtonSelector.png"); // 8x12