XRayTraceDecrementIndex  653 native_client_sdk/src/libraries/xray/xray.c   int marker = XRayTraceDecrementIndex(capture, capture->frame.entry[i].start);
XRayTraceDecrementIndex  127 native_client_sdk/src/libraries/xray/xray_priv.h XRAY_NO_INSTRUMENT int XRayTraceDecrementIndex(