[Webkit-unassigned] [Bug 226390] New: Add a way to prefix output of `WTFReportBacktrace` to make log filtering easier

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=226390

            Bug ID: 226390
           Summary: Add a way to prefix output of `WTFReportBacktrace` to
                    make log filtering easier
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: drousso at apple.com

Often times while debugging I add `WTFLogAlways("<DR> ...")` to various places as indicators that "logic has reached here". This is especially useful when debugging iOS as unlike macOS there's no console output from `run-safari`, meaning that I have to use system logging, which is often a deluge of unrelated information. Having "<DR>" as a prefix makes filtering through the system logging trivial as I can ignore logs that don't have it. Unfortunately, `WTFReportBacktrace` does not have a way to add this prefix, so it becomes much harder to find in the logs.

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