<AWT Dev> [9] Review Request: 8074757 Remove java.awt.Toolkit methods which return peer types

[Sergey Bylokhov]

Hello.
Please review the fix for jdk 9.
There are a number of public methods in the java.awt.Toolkit class, 
which reference the unsupported java.awt.dnd.peer and java.awt.peer 
interfaces.

There is a decision to remove these references as described: 
http://mail.openjdk.java.net/pipermail/awt-dev/2015-February/008924.html
Changes description:
  - All such methods were moved from Toolkit.java to the 
ComponentFactory.java. Note that all our toolkits implement 
ComponentFactory interface.
  - HToolkit, HeadlessToolkit, SunToolkit were cleared because they have 
the same implementation of these methods as in ComponentFactory.
  - The questionable moment is that I throw an AWTError in a some places 
if a default toolkit not implements ComponentFactory interface.

Bug: https://bugs.openjdk.java.net/browse/JDK-8074757
Webrev can be found at: http://cr.openjdk.java.net/~serb/8074757/webrev.04

-- 
Best regards, Sergey.