Bug 1445104 - Remove HTMLMediaElement::{mStatsShowing,mMediaSecurityVerified} as they're unused. r=jya

MozReview-Commit-ID: LtKw4Hj3M0G

dom/html/HTMLMediaElement.cpp

@@ -4875,9 +4875,6 @@ HTMLMediaElement::FinishDecoderSetup(MediaDecoder* aDecoder)
 {
   ChangeNetworkState(NETWORK_LOADING);
 
-  // Force a same-origin check before allowing events for this media resource.
-  mMediaSecurityVerified = false;
-
   // Set mDecoder now so if methods like GetCurrentSrc get called between
   // here and Load(), they work.
   SetDecoder(aDecoder);