Disable 10secs forward/backward seeking for rtsp as seek is a very expensive operation there. Decouple the 10sec forward/backward button functionality from seekbar functionality.

Change-Id: I016e79b688774f8ee91ac53216197b5fb9cb41b2
related-to-bug: 3073955
diff --git a/media/libstagefright/MediaExtractor.cpp b/media/libstagefright/MediaExtractor.cpp
index 9bc94de..8a5fb11 100644
--- a/media/libstagefright/MediaExtractor.cpp
+++ b/media/libstagefright/MediaExtractor.cpp
@@ -41,7 +41,7 @@
 }
 
 uint32_t MediaExtractor::flags() const {
-    return CAN_SEEK_BACKWARD | CAN_SEEK_FORWARD | CAN_PAUSE;
+    return CAN_SEEK_BACKWARD | CAN_SEEK_FORWARD | CAN_PAUSE | CAN_SEEK;
 }
 
 // static