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isHTML(), isScript(), isScriptURL() and isURL() added to
TrustedTypePolicyFactory class as part of Trusted Types API update to
current JS polyfill.
The methods require additional code to be fully matched to polyfill
expected behaviour.

Added a helper private method GetWrapperTypeInfoFromScriptValue.

Bug: 739170
Change-Id: I027e43ab6432405c686255a4d0ce24248c59a4dc
Reviewed-on: https://chromium-review.googlesource.com/1238433
Commit-Queue: Daniel Vogelheim <vogelheim@chromium.org>
Reviewed-by: Daniel Vogelheim <vogelheim@chromium.org>
Cr-Commit-Position: refs/heads/master@{#595527}