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Record viewport unit usage and generate proper restyle hint.

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This commit is contained in:
Xidorn Quan 2017-07-25 18:20:50 +10:00
parent bf16b146e8
commit 388875ca44
4 changed files with 30 additions and 5 deletions
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4
components/style/stylesheets/viewport_rule.rs
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@ -696,6 +696,10 @@ impl MaybeNew for ViewportConstraints {
//
// Note: DEVICE-ADAPT § 5. states that relative length values are
// resolved against initial values
//
// Note, we set used_viewport_size flag for Gecko in au_viewport_size.
// If we ever start supporting ViewportRule in Gecko, we probably want
// to avoid doing so at this place.
let initial_viewport = device.au_viewport_size();
let provider = get_metrics_provider_for_product();