RFR: 8264872: Dependencies: Migrate to PerfData counters

[Nils Eliasson]

On Wed, 7 Apr 2021 22:07:18 GMT, Vladimir Ivanov <vlivanov at openjdk.org> wrote:

> Migrate performance counters on `Dependencies` (`deps_find_witness_*`) to `PerfData`.
> 
> Testing:
> - [x] hs-tier1 - hs-tier2

Looks good.

src/hotspot/share/code/dependencies.cpp line 1212:

> 1210: };
> 1211: 
> 1212: PerfCounter* ClassHierarchyWalker::_perf_find_witness_anywhere_calls_count   = NULL;

Align '=' on all three or skip extra space

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Marked as reviewed by neliasso (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/3386