ue/histogram.html">

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/**
 * @fileoverfiew This file contains implementation of extracting UMA histograms.
 *
 * UMA histograms are logged in trace events titled 'UMAHistogramSamples'. The
 * event arguments contain the histogram name and the base-64 coded of an
 * snapshot of histogram samples serialized in a pickle. These are emitted at
 * the end of tracing, and represent the difference in the UMA histograms from
 * when the tracing began.
 *
 * If there are several processes that 