RFR: JDK-8301462: Convert Permission files to use lambda after JDK-8076596

[Mandy Chung]

A trivial fix.   Convert the use of anonymous inner classes in a few Permission classes to lambdas to work around JDK-8076596, which has been resolved.

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Commit messages:
 - JDK-8301462: Convert Permission files to use lambda after JDK-8076596

Changes: https://git.openjdk.org/jdk/pull/12463/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12463&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8301462
  Stats: 75 lines in 4 files changed: 3 ins; 30 del; 42 mod
  Patch: https://git.openjdk.org/jdk/pull/12463.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12463/head:pull/12463

PR: https://git.openjdk.org/jdk/pull/12463