Add GetFrameWithStackID to the StackFrameList and the Thread (which routes to its StackFrameList.)

git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@128592 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Target/Thread.cpp b/source/Target/Thread.cpp
index 95685e9..384d03f 100644
--- a/source/Target/Thread.cpp
+++ b/source/Target/Thread.cpp
@@ -950,6 +950,11 @@
     return GetStackFrameList().GetFrameWithConcreteFrameIndex (unwind_idx);
 }
 
+lldb::StackFrameSP
+Thread::GetFrameWithStackID(StackID &stack_id)
+{
+    return GetStackFrameList().GetFrameWithStackID (stack_id);
+}
 
 
 lldb::StackFrameSP