Getting context information from the kernel when catching a SIGABRT on iOS.

src/client/mac/handler/exception_handler.h

Index: src/client/mac/handler/exception_handler.h
===================================================================
--- src/client/mac/handler/exception_handler.h	(revision 1014)
+++ src/client/mac/handler/exception_handler.h	(working copy)
@@ -182,10 +182,13 @@
   // success, false otherwise.
   bool SendMessageToHandlerThread(HandlerThreadMessage message_id);
 
-  // All minidump writing goes through this one routine
+  // All minidump writing goes through this one routine.
+  // |task_context| can be NULL. If not, it will be used to retrieve the
+  // context of the current thread, instead of using |thread_get_state|.
   bool WriteMinidumpWithException(int exception_type,
                                   int exception_code,
                                   int exception_subcode,
+                                  ucontext_t *task_context,
                                   mach_port_t thread_name,
                                   bool exit_after_write,
                                   bool report_current_thread);