[Webkit-unassigned] [Bug 158799] New: gUM crashes when creating a MediaStream with only an audio or only a video MediaStreamTrack

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=158799

            Bug ID: 158799
           Summary: gUM crashes when creating a MediaStream with only an
                    audio or only a video MediaStreamTrack
    Classification: Unclassified
           Product: WebKit
           Version: Other
          Hardware: All
                OS: Other
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media Elements
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: gruan at apple.com

http://www.w3.org/TR/mediacapture-streams/#methods-5

Currently, the implementation of gUM expects
- The parameter to gUM to have both audio and video constraints to have non-falsy values.
- Both a video and audio source to be available.

The implementation crashes since UserMediaRequest::constraintsValidated expects defined parameters audioSource and videoSource.

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