Re-add "demonstrate new Args API"

This fixes the build breakage due to the use of C++14.

llvm-svn: 287647
diff --git a/lldb/source/Breakpoint/BreakpointIDList.cpp b/lldb/source/Breakpoint/BreakpointIDList.cpp
index 0f8a027..037b03e 100644
--- a/lldb/source/Breakpoint/BreakpointIDList.cpp
+++ b/lldb/source/Breakpoint/BreakpointIDList.cpp
@@ -122,13 +122,12 @@
   llvm::StringRef range_from;
   llvm::StringRef range_to;
   llvm::StringRef current_arg;
-  const size_t num_old_args = old_args.GetArgumentCount();
   std::set<std::string> names_found;
 
-  for (size_t i = 0; i < num_old_args; ++i) {
+  for (size_t i = 0; i < old_args.size(); ++i) {
     bool is_range = false;
 
-    current_arg = old_args.GetArgumentAtIndex(i);
+    current_arg = old_args[i].ref;
     if (!allow_locations && current_arg.contains('.')) {
       result.AppendErrorWithFormat(
           "Breakpoint locations not allowed, saw location: %s.",
@@ -152,19 +151,17 @@
         return;
       } else
         names_found.insert(current_arg);
-    } else if ((i + 2 < num_old_args) &&
-               BreakpointID::IsRangeIdentifier(
-                   old_args.GetArgumentAtIndex(i + 1)) &&
+    } else if ((i + 2 < old_args.size()) &&
+               BreakpointID::IsRangeIdentifier(old_args[i + 1].ref) &&
                BreakpointID::IsValidIDExpression(current_arg) &&
-               BreakpointID::IsValidIDExpression(
-                   old_args.GetArgumentAtIndex(i + 2))) {
+               BreakpointID::IsValidIDExpression(old_args[i + 2].ref)) {
       range_from = current_arg;
-      range_to = old_args.GetArgumentAtIndex(i + 2);
+      range_to = old_args[i + 2].ref;
       is_range = true;
       i = i + 2;
     } else {
       // See if user has specified id.*
-      llvm::StringRef tmp_str = old_args.GetArgumentAtIndex(i);
+      llvm::StringRef tmp_str = old_args[i].ref;
       size_t pos = tmp_str.find('.');
       if (pos != llvm::StringRef::npos) {
         llvm::StringRef bp_id_str = tmp_str.substr(0, pos);