Create alias of variable so it lives for crash-reporting.
Create alias of variable so it lives for crash-reporting.

The "linear_range" double ends its life before the set_range() call that
is crashing.

BUG=586622

Review URL: https://codereview.chromium.org/1716903002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#376537}

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