Only perform URL requesting prefetches when viewer is visible. #3834
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This makes pre-renders slightly cheaper. Also applies referrer policy on these requests to origin, as they should be independent of the referring page.
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LGTM. @cramforce should we expect a change in pre-render complete csi timings? |
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It might get a bit slower or faster :) Will be interesting to see. |
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This makes pre-renders slightly cheaper. Also applies referrer policy on these requests to origin, as they should be independent of the referring page.