Implement ASan history threads in SB API

Reviewed at
http://reviews.llvm.org/D5219
and
http://lists.cs.uiuc.edu/pipermail/lldb-commits/Week-of-Mon-20140901/012809.html

llvm-svn: 217300

lldb/source/API/SBProcess.cpp

@@ -38,6 +38,7 @@
 #include "lldb/API/SBEvent.h"
 #include "lldb/API/SBFileSpec.h"
 #include "lldb/API/SBThread.h"
+#include "lldb/API/SBThreadCollection.h"
 #include "lldb/API/SBStream.h"
 #include "lldb/API/SBStringList.h"
 #include "lldb/API/SBUnixSignals.h"
@@ -1381,3 +1382,15 @@ SBProcess::GetExtendedBacktraceTypeAtIndex (uint32_t idx)
     }
     return NULL;
 }
+
+SBThreadCollection
+SBProcess::GetHistoryThreads (addr_t addr)
+{
+    ProcessSP process_sp(GetSP());
+    SBThreadCollection threads;
+    if (process_sp)
+    {
+        threads = SBThreadCollection(process_sp->GetHistoryThreads(addr));
+    }
+    return threads;
+}