Tests that the presence of a source nonce triggers a token signing request.


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Frame: '<!--frame1-->'
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Token signing request not received - timed out.

Unattributed Private Click Measurements:
WebCore::PrivateClickMeasurement 1
Source site: 127.0.0.1
Attribute on site: localhost
Source ID: 3
No attribution trigger data.
Application bundle identifier: com.apple.WebKit.WebKitTestRunner