RFR: 8279613: JFR: Snippify Javadoc

[Erik Gahlin]

Hi,

Could I have a review that uses the new snippet tag described in https://openjdk.java.net/jeps/413

I found a couple of issues with the current documentation, but to simplify review I kept the code samples as is. I will improve documentation separately. 

I added package "example1" and "example2"  to the Snippet file to avoid collisions and complaints about code not being in a package (at least when using Eclipse).

Testing: tier1 + jdk/jdk/jfr

Thanks
Erik

-------------

Commit messages:
 - Unique package name
 - Remove trailing whitespace
 - initial

Changes: https://git.openjdk.java.net/jdk/pull/7157/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=7157&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8279613
  Stats: 711 lines in 15 files changed: 412 ins; 272 del; 27 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7157.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7157/head:pull/7157

PR: https://git.openjdk.java.net/jdk/pull/7157