Bug 1303554 - part2 : remove the b2g specific checking in IsCurrentlyPlaying(). r=baku

MozReview-Commit-ID: 5kUJc24uEIH

--HG--
extra : rebase_source : b1b059a0b3d579f301d3aa9bde336ecf86fadd02

dom/html/HTMLMediaElement.cpp

@@ -6386,20 +6386,8 @@ HTMLMediaElement::IsCurrentlyPlaying() const
 {
   // We have playable data, but we still need to check whether data is "real"
   // current data.
-  if (mReadyState >= nsIDOMHTMLMediaElement::HAVE_CURRENT_DATA &&
-      !IsPlaybackEnded()) {
-
-    // Restart the video after ended, it needs to seek to the new position.
-    // In b2g, the cache is not large enough to store whole video data, so we
-    // need to download data again. In this case, although the ready state is
-    // "HAVE_CURRENT_DATA", it is the previous old data. Actually we are not
-    // yet have enough currently data.
-    if (mDecoder && mDecoder->IsSeeking() && !mPlayingBeforeSeek) {
-      return false;
-    }
-    return true;
-  }
-  return false;
+  return mReadyState >= nsIDOMHTMLMediaElement::HAVE_CURRENT_DATA &&
+         !IsPlaybackEnded();
 }
 
 void