Add PointerLockOptions argument to requestPointerLock
Add PointerLockOptions argument to requestPointerLock

Experimental API proposed in https://github.com/w3c/pointerlock/pull/49/ and
implemented in Chromium (crbug/982379)

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=291899961

google/closure-compiler,nawawi/closure-compiler,google/closure-compiler,vobruba-martin/closure-compiler,nawawi/closure-compiler,vobruba-martin/closure-compiler,ChadKillingsworth/closure-compiler,vobruba-martin/closure-compiler,ChadKillingsworth/closure-compiler,monetate/closure-compiler,nawawi/closure-compiler,vobruba-martin/closure-compiler,monetate/closure-compiler,ChadKillingsworth/closure-compiler,google/closure-compiler,google/closure-compiler,monetate/closure-compiler,monetate/closure-compiler,Yannic/closure-compiler,Yannic/closure-compiler,nawawi/closure-compiler,Yannic/closure-compiler,ChadKillingsworth/closure-compiler,Yannic/closure-compiler