[Webkit-unassigned] [Bug 170043] New: SMIL animations inside SVG image do not get paused in background tabs

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=170043

            Bug ID: 170043
           Summary: SMIL animations inside SVG image do not get paused in
                    background tabs
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: SVG
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: cdumez at apple.com
                CC: akling at apple.com, barraclough at apple.com,
                    koivisto at iki.fi, zimmermann at kde.org

SMIL animations inside SVG image do not get paused in background tabs.

Example:
https://pr.gg/svgExamples/smilAnimationImage.html (first animation)

The issue is that SVGImage has its own Page object (SVGImage::m_page) and this page contains the SMIL animation (not the main page). When the tab goes into the background, the main Page knows it is no longer visible and it pauses its SVG animations. However, the Page inside the SVGImage does not currently know it is no longer visible and its SVG animations keep going.

I saw this issue on Yahoo News and reduced it.

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