RFR: 8282547: IGV: add control-flow graph view [v2]

[Roberto Castañeda Lozano]

On Thu, 17 Mar 2022 07:46:49 GMT, Christian Hagedorn <chagedorn at openjdk.org> wrote:

>> Roberto Castañeda Lozano has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Refactor code as suggested by Christian
>
> src/utils/IdealGraphVisualizer/Graph/src/main/java/com/sun/hotspot/igv/graph/Connection.java line 38:
> 
>> 36:     }
>> 37: 
>> 38:     public ConnectionStyle getStyle();
> 
> `public` is implied for interface methods and does not need to be stated explicitly.

I declared it explicitly as `public` for consistency with the rest of the IGV project. Updating all interfaces would be better addressed in a separate cleanup RFE, I think.

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PR: https://git.openjdk.java.net/jdk/pull/7817