Bug 1357639 - part1 : change tab's media playing state when the tab is controlled by media control. r=sebastian

MozReview-Commit-ID: HGuMXut29uB

--HG--
extra : rebase_source : fe78344533cb691562e31ce68b382d8e514b349b

mobile/android/base/java/org/mozilla/gecko/media/MediaControlService.java

@@ -335,6 +335,14 @@ public class MediaControlService extends Service implements Tabs.OnTabsChangedLi
 
     }
 
+    private void setMediaStateForTab(boolean isTabPlaying) {
+        final Tab tab = mTabReference.get();
+        if (tab == null) {
+            return;
+        }
+        tab.setIsMediaPlaying(isTabPlaying);
+    }
+
     private void notifyObservers(String topic, String data) {
         GeckoAppShell.notifyObservers(topic, data);
     }
@@ -345,6 +353,7 @@ public class MediaControlService extends Service implements Tabs.OnTabsChangedLi
 
     private void setState(State newState) {
         mMediaState = newState;
+        setMediaStateForTab(mMediaState.equals(State.PLAYING));
         onStateChanged();
     }