message: Update dependency descriptor rtp header extension uri
  to match one in av1 rtp spec examples:
  Cr-Commit-Position: refs/heads/master@{#30531}
diff: @@ -26,8 +26,8 @@ class RtpDependencyDescriptorExtension {
  static constexpr RTPExtensionType kId = kRtpExtensionGenericFrameDescriptor02;
  // TODO(bugs.webrtc.org/10342): Use uri from the spec when there is one.
  static constexpr char kUri[] =
  - "http://www.webrtc.org/experiments/rtp-hdrext/"
  - "generic-frame-descriptor-02";
  + "https://aomediacodec.github.io/av1-rtp-spec/"
  + "#dependency-descriptor-rtp-header-extension";
  static bool Parse(rtc::ArrayView<const uint8_t> data,
  const FrameDependencyStructure* structure,
  