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bcwhite authored
By having BucketRanges keep a reference to where the data can be found in persistent memory, the existing de-dup of the BucketRanges object also serves to avoid duplicating the data in persistent memory. Simple testing shows allocated persistent histogram memory in the browser is reduced by about 22%. This should be similar in all processes though somewhat less as the number of histograms held goes down. BUG=705342 Review-Url: https://codereview.chromium.org/2794073002 Cr-Commit-Position: refs/heads/master@{#462897}
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