
Clarify goog.ui.Component's setElementInternal.

I keep seeing people use it as if it will render some new element.

R=nicksantos
DELTA=5  (5 added, 0 deleted, 0 changed)


Revision created by MOE tool push_codebase.
MOE_MIGRATION=1052012


yamadatomonori/closure-library,yamadatomonori/closure-library,yamadatomonori/closure-library