Bug 1960567 - remove the last C++ and scriptable APIs to accumulate data to legacy telemetry histograms, r=chutten.
Differential Revision:
https://phabricator.services.mozilla.com/D255582
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<link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
<link rel="author" title="Mozilla" href="https://www.mozilla.org/">
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.multicol {
column-count: 2;
column-gap: 0;
width: 200px;
font: 50px/1 Ahem;
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<div>AX</div>
<div>BX</div>
<div>CX</div>
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