[misc] Add usecase for SIMD

Impacted Suites: webapi-usecase-w3c-tests
Impacted TCs num: New 1, Update 0, Delete 0
Unit test Platform: Android,Tizen
Android test result summary: Pass 1, Fail 0, Blocked 0
Tizen test result summary: Pass 1, Fail 0, Blocked 0
Hmm, *smoother* is not an explicit pass condition.