Mode clean-up pt 1: rename classic/non-strict mode to sloppy mode

src/json-parser.h

Index: src/json-parser.h
diff --git a/src/json-parser.h b/src/json-parser.h
index 72c69100d1651baaa893257e0ace9ef43b1624b8..e9cd66bc22fe23f45e67a23a9b34e52cbe764ce0 100644
--- a/src/json-parser.h
+++ b/src/json-parser.h
@@ -361,7 +361,7 @@ Handle<Object> JsonParser<seq_ascii>::ParseJsonObject() {
           Handle<Object> value = ParseJsonValue();
           if (value.is_null()) return ReportUnexpectedCharacter();
 
-          JSObject::SetOwnElement(json_object, index, value, kNonStrictMode);
+          JSObject::SetOwnElement(json_object, index, value, kSloppyMode);
           continue;
         }
         // Not an index, fallback to the slow path.