Remove dependency on JNIHelp header side effects.

Bug: 10680559
Change-Id: I47870d6c48906e0a420c52b7bc5945ffe29c68a2
diff --git a/media/jni/android_media_MediaScanner.cpp b/media/jni/android_media_MediaScanner.cpp
index 5d27966..4e3d14e 100644
--- a/media/jni/android_media_MediaScanner.cpp
+++ b/media/jni/android_media_MediaScanner.cpp
@@ -25,6 +25,7 @@
 #include "jni.h"
 #include "JNIHelp.h"
 #include "android_runtime/AndroidRuntime.h"
+#include "android_runtime/Log.h"
 
 using namespace android;