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85fd233d34
There were a couple of problems when delivering tap gestures to content with full zoom applied. One was that the ConverToGecko function converted the coords into "CSS pixel" space by using the web content's CSS-to-LD scale, but also applied that on the translation from the chrome area. Moving that conversion to later in the process (after the coords got passed through TabParent:: AdjustTapToChildWidget) corrected that issue. The other problem was that bits of code in APZEventState and APZCCallbackHelper were using the widget->GetDefaultScale() value as the CSS-to-LD scale, but that omitted the full zoom value. Getting the CSS-to-LD scale from the presShell and propagating that through corrected that issue. MozReview-Commit-ID: KdrkdEZslHo
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