Switch arm libcorkscrew over to <sys/ucontext.h>.
Change-Id: I90cf89453f2718fd4bec2bf17ea616ee8165d36a
diff --git a/libcorkscrew/arch-arm/backtrace-arm.c b/libcorkscrew/arch-arm/backtrace-arm.c
index 7bd0d8f..751efbf 100644
--- a/libcorkscrew/arch-arm/backtrace-arm.c
+++ b/libcorkscrew/arch-arm/backtrace-arm.c
@@ -62,19 +62,7 @@
#include <elf.h>
#include <cutils/log.h>
-#if !defined(__BIONIC_HAVE_UCONTEXT_T)
-/* Old versions of the Android <signal.h> didn't define ucontext_t. */
-#include <asm/sigcontext.h> /* Ensure 'struct sigcontext' is defined. */
-
-/* Machine context at the time a signal was raised. */
-typedef struct ucontext {
- uint32_t uc_flags;
- struct ucontext* uc_link;
- stack_t uc_stack;
- struct sigcontext uc_mcontext;
- uint32_t uc_sigmask;
-} ucontext_t;
-#endif /* !__BIONIC_HAVE_UCONTEXT_T */
+#include <ucontext.h>
/* Unwind state. */
typedef struct {