Currently we produce a warning every time an unsupported extension is
used. The original bug (b/139528538) called for logging these structs
silently unless a debugger's attached.

So I've replaced all of our warnings for unsupported structs with
calls to LOG_TRAP. This is an update to TRACE_ASSERT. LOG_TRAP will
never emit to the debug log, instead it will only print to a file if
writing to files is enabled for logv.

Bug: b/148415347
Change-Id: Ib4ad2b20b3dffce4fac597c891b2f5ee23e032c4
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/41348Tested-by: Sean Risser <srisser@google.com>
Presubmit-Ready: Sean Risser <srisser@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>