RFR: 8277817: java/awt/dnd/BadSerializationTest/BadSerializationTest.java failed: ClassNotFoundException: com.apple.laf.AquaImageFactory$SystemColorProxy [v6]

[Liam Miller-Cushon]

> This change updates the serialized objects used by `java/awt/dnd/BadSerializationTest/BadSerializationTest.java` using a similar approach to the previous fix in [JDK-8039082](https://bugs.openjdk.java.net/browse/JDK-8039082).

Liam Miller-Cushon has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains two commits:

 - Add uninstallColorsAndFont
 - 8277817: java/awt/dnd/BadSerializationTest/BadSerializationTest.java failed: ClassNotFoundException: com.apple.laf.AquaImageFactory$SystemColorProxy

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Changes: https://git.openjdk.java.net/jdk/pull/6603/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6603&range=05
  Stats: 64 lines in 28 files changed: 58 ins; 4 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6603.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6603/head:pull/6603

PR: https://git.openjdk.java.net/jdk/pull/6603