Fix _detectMinified in DebuggerPlugin
Fix _detectMinified in DebuggerPlugin

Change-Id: I490ee7564363fc98bb3d7e8392165df11779650e
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/1899511
Reviewed-by: Sigurd Schneider <f04d242e109628a27a0f75fd49a87722bcf291fd@chromium.org>
Commit-Queue: Sigurd Schneider <f04d242e109628a27a0f75fd49a87722bcf291fd@chromium.org>

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