Speculative fix when translating blob data to a file path

media/base/android/media_player_bridge.cc

Index: media/base/android/media_player_bridge.cc
diff --git a/media/base/android/media_player_bridge.cc b/media/base/android/media_player_bridge.cc
index bbb7a116c74d2e0d04b20c1447fa16bca5d18949..433a6a8d15a3c49b3d49a2c9fed3fb43c9672788 100644
--- a/media/base/android/media_player_bridge.cc
+++ b/media/base/android/media_player_bridge.cc
@@ -263,6 +263,11 @@ void MediaPlayerBridge::OnAuthCredentialsRetrieved(
 }
 
 void MediaPlayerBridge::ExtractMediaMetadata(const std::string& url) {
+  if (url.empty()) {
+    OnMediaError(MEDIA_ERROR_FORMAT);
+    return;
+  }
+
   int fd;
   int64 offset;
   int64 size;