Fix withCredentials in common.js
Fix withCredentials in common.js

Bug: skia:7585
Change-Id: I717d5790facce275d898ce6218698e783bdeaa1e
Reviewed-on: https://skia-review.googlesource.com/108900
Reviewed-by: Joe Gregorio <b9cf2471ff6d33504cafe8e6f356b732b2cadced@google.com>
Commit-Queue: Kevin Lubick <7cdab2cfab351f23814786ba39716e90eed69047@google.com>

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