Bug 1347648 - part2 : paused media element is non-audible. r=jwwang

If the media element is paused, it should be non-audible.

MozReview-Commit-ID: 2HjV9gNNcnV

dom/html/HTMLMediaElement.cpp

@@ -1015,8 +1015,9 @@ private:
       return AudioChannelService::AudibleState::eMaybeAudible;
     }
 
-    // Media is suspended.
-    if (mSuspended != nsISuspendedTypes::NONE_SUSPENDED) {
+    // Suspended or paused media doesn't produce any sound.
+    if (mSuspended != nsISuspendedTypes::NONE_SUSPENDED ||
+        mOwner->mPaused) {
       return AudioChannelService::AudibleState::eNotAudible;
     }