Refactor RenderState and remove unused functionality.

Test: hwui_unit_tests still pass
Change-Id: Ie943671535ab8c5da1bac05985e815e0cb842dc1
diff --git a/libs/hwui/tests/common/TestUtils.h b/libs/hwui/tests/common/TestUtils.h
index c35f512..a00b8db 100644
--- a/libs/hwui/tests/common/TestUtils.h
+++ b/libs/hwui/tests/common/TestUtils.h
@@ -24,6 +24,7 @@
 #include <Snapshot.h>
 #include <hwui/Bitmap.h>
 #include <pipeline/skia/SkiaRecordingCanvas.h>
+#include <private/hwui/DrawGlInfo.h>
 #include <renderstate/RenderState.h>
 #include <renderthread/RenderThread.h>