Make audio tag cope with live streams

Live streams seem to take a little while to initialize, so it's feasible
that we might get a play request before transitioned to the PREPARED
state. In that case track that we should start playing when onPrepare
completes.

Change-Id: I66ed0ef3a0905a1c5d4206fb2e7bbcc05a593fc7

core/java/android/webkit/HTML5Audio.java

@@ -179,7 +179,7 @@ class HTML5Audio extends Handler
     }
 
     private void play() {
-        if ((mState == ERROR || mState == IDLE) && mUrl != null) {
+        if ((mState >= ERROR && mState < PREPARED) && mUrl != null) {
             resetMediaPlayer();
             setDataSource(mUrl);
             mAskToPlay = true;