More header untangling.

Change-Id: I090943775cbda8d9515cdb484957f6b05d5b1799
diff --git a/rsContext.cpp b/rsContext.cpp
index 748b72a..1b51872 100644
--- a/rsContext.cpp
+++ b/rsContext.cpp
@@ -18,6 +18,7 @@
 #include "rsDevice.h"
 #include "rsContext.h"
 #include "rsThreadIO.h"
+#include "rsMesh.h"
 #include <ui/FramebufferNativeWindow.h>
 #include <gui/DisplayEventReceiver.h>