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Gabriele Svelto authored
This adds a mechanism that discards tabs when the browser detects a low-memory scenario. Tabs are discarded in LRU order prioritizing regular tabs over pinned ones, pinned ones over tabs playing audio and all of the previous over pinned tabs playing audio. Differential Revision: https://phabricator.services.mozilla.com/D20476 --HG-- extra : moz-landing-system : lando
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