Include what is needed
Remove old includes.
Header files only include other header files that they directly need themselves.
Change-Id: Ic471386808d9f42ea19ccbd59cb50a5f83a89dd0
diff --git a/include/media/Visualizer.h b/include/media/Visualizer.h
index aa58905..e429263 100644
--- a/include/media/Visualizer.h
+++ b/include/media/Visualizer.h
@@ -19,7 +19,7 @@
#include <media/AudioEffect.h>
#include <audio_effects/effect_visualizer.h>
-#include <string.h>
+#include <utils/Thread.h>
/**
* The Visualizer class enables application to retrieve part of the currently playing audio for