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/Commands/CommandObjectSettings.cpp b/lldb/source/Commands/CommandObjectSettings.cpp
index 0a97804..23fdcb9 100644
--- a/lldb/source/Commands/CommandObjectSettings.cpp
+++ b/lldb/source/Commands/CommandObjectSettings.cpp
@@ -293,15 +293,10 @@
   bool DoExecute(Args &args, CommandReturnObject &result) override {
     result.SetStatus(eReturnStatusSuccessFinishResult);
 
-    const size_t argc = args.GetArgumentCount();
     if (!args.empty()) {
-      // TODO: Convert this to StringRef based enumeration.  Requires converting
-      // DumpPropertyValue first.
-      for (size_t i = 0; i < argc; ++i) {
-        const char *property_path = args.GetArgumentAtIndex(i);
-
+      for (const auto &arg : args) {
         Error error(m_interpreter.GetDebugger().DumpPropertyValue(
-            &m_exe_ctx, result.GetOutputStream(), property_path,
+            &m_exe_ctx, result.GetOutputStream(), arg.ref,
             OptionValue::eDumpGroupValue));
         if (error.Success()) {
           result.GetOutputStream().EOL();