[9] Review Request: 8032187 [macosx] The fix for MACOSX_PORT-424 should be reworked

[Sergey Bylokhov]

Hello.
Please review the fix for jdk 9.
 - Initial fix for MACOSX_PORT-424 was reverted back.
 - delegate.addNotify(),because it was called from 
delegateContainer.addNotify();
 - Testcase was updated to filter out events not from the Frame:
  84             if (e.getSource() instanceof Frame) {
  85                 counter++;
  86                 notify();
  87             }

Bug: https://bugs.openjdk.java.net/browse/JDK-8032187
Webrev can be found at: http://cr.openjdk.java.net/~serb/8032187/webrev.00

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Best regards, Sergey.