[7u4] Review request for 7145768 - [macosx] Regression: failure in b11 of ModalDialogInFocusEventTest

[Anton V. Tarasov]

Hello,

Please review a fix for 7145768.

webrev: http://cr.openjdk.java.net/~ant/7145768/webrev.0/webrev

The fix addresses two focus issues:

1. A window's native focus state should be inspected when requestFocusInWindow() call chain is 
evaluated. This is to avoid requesting focus to a window when it's not allowed for an unfocused window.

2. Requesting focus to a window being shown should go through the requestWindowFocus() method,
which manages all necessary native focus requests (requests focus to an owner when a simple window 
is shown). The changeFocusedWindow() method is called after native focused window is already set
and it just processes this fact on java level.

Thanks,
Anton.