RFR: 8270867: Debug build of WebKit 613.1 fails on Linux

[Kevin Rushforth]

On Wed, 16 Mar 2022 07:54:57 GMT, Peter Zhelezniakov <peterz at openjdk.org> wrote:

> The file `wtf/linux/MemoryPressureLinux.cpp` was renamed `wtf/unix/MemoryPressureUnix.cpp` in https://trac.webkit.org/changeset/261428 . In the openjfx workspace, both files are present. I'm removing the old file.

I was able to do a local debug build using `-PCONF=DebugNative` on my Linux system using this patch. I also confirmed that a production build still works fine on our CI build system.

Btw, I filed [JDK-8283273](https://bugs.openjdk.java.net/browse/JDK-8283273) as a follow-up bug to track the problem of nor being able to do a debug build on Linux with an older version of Ruby.

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Marked as reviewed by kcr (Lead).

PR: https://git.openjdk.java.net/jfx/pull/756