Bug 1129263 - Part 4. Use MediaInfo instead of mHasAudio/Video in media element. r=roc

dom/html/HTMLVideoElement.cpp

@@ -179,7 +179,7 @@ double HTMLVideoElement::MozFrameDelay()
 bool HTMLVideoElement::MozHasAudio() const
 {
   MOZ_ASSERT(NS_IsMainThread(), "Should be on main thread.");
-  return mHasAudio;
+  return HasAudio();
 }
 
 JSObject*
@@ -253,7 +253,7 @@ HTMLVideoElement::UpdateScreenWakeLock()
     return;
   }
 
-  if (!mScreenWakeLock && !mPaused && !hidden && mHasVideo) {
+  if (!mScreenWakeLock && !mPaused && !hidden && HasVideo()) {
     nsRefPtr<power::PowerManagerService> pmService =
       power::PowerManagerService::GetInstance();
     NS_ENSURE_TRUE_VOID(pmService);