RFR: 8299226: compiler/profiling/TestTypeProfiling.java: make it not throw if C2 is not enabled. [v2]

[Ilya Korennoy]

> Changing RuntimeException to SkippedException when TieredStopAtLevel < 4.
> 
> The main part of this problem was done in [JDK-8226795](https://bugs.openjdk.org/browse/JDK-8226795) but for some reason, the exception was not changed.

Ilya Korennoy has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:

 - Merge branch 'openjdk:master' into 8299226
 - 8299226: Throw SkippedException instead of RuntimeException in case of TieredStopAtLevel < 4

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/12981/files
  - new: https://git.openjdk.org/jdk/pull/12981/files/9663af7b..bff4593a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=12981&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=12981&range=00-01

  Stats: 3834 lines in 117 files changed: 1528 ins; 1714 del; 592 mod
  Patch: https://git.openjdk.org/jdk/pull/12981.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12981/head:pull/12981

PR: https://git.openjdk.org/jdk/pull/12981