[Media>UI] Allow the notification info to be updated before playback service is created

chrome/android/java/src/org/chromium/chrome/browser/media/ui/MediaNotificationManager.java

Index: chrome/android/java/src/org/chromium/chrome/browser/media/ui/MediaNotificationManager.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/media/ui/MediaNotificationManager.java b/chrome/android/java/src/org/chromium/chrome/browser/media/ui/MediaNotificationManager.java
index 01c791d7718515f67e5a2fa88122a78ac04111a4..c4013918973d7712d5a76a7963ed9a56d8252f46 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/media/ui/MediaNotificationManager.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/media/ui/MediaNotificationManager.java
@@ -661,10 +661,14 @@ public class MediaNotificationManager {
             return;
         }
 
-        if (mService == null && mediaNotificationInfo.isPaused) return;
-
         mMediaNotificationInfo = mediaNotificationInfo;
 
+        // If there's no pending service start request, don't try to start service. If there is a
+        // pending service start request but the service haven't started yet, only update the
+        // |mMediaNotificationInfo|. The service will update the notification later once it's
+        // started.
+        if (mService == null && mediaNotificationInfo.isPaused) return;
+
         if (mService == null) {
             updateMediaSession();
             updateNotificationBuilder();