Remove many features when building product mode

runtime/vm/parser_test.cc

Index: runtime/vm/parser_test.cc
diff --git a/runtime/vm/parser_test.cc b/runtime/vm/parser_test.cc
index a5e6f2e89f5bb3ad3ee5e78ba0f8f8e1baefadfc..c7328ace5d74cee92752d3d9e690e9f655374e61 100644
--- a/runtime/vm/parser_test.cc
+++ b/runtime/vm/parser_test.cc
@@ -168,10 +168,13 @@ TEST_CASE(Parser_TopLevel) {
 }
 
 
-const char* saved_vars = NULL;
+#ifndef PRODUCT
 
 
-char* SkipIndex(const char* input) {
+static const char* saved_vars = NULL;
+
+
+static char* SkipIndex(const char* input) {
   char* output_buffer = new char[strlen(input)];
   char* output = output_buffer;
 
@@ -565,4 +568,6 @@ TEST_CASE(Parser_AllocateVariables_MiddleChain) {
       CaptureVarsAtLine(lib, "a", 10));
 }
 
+#endif  // !PRODUCT
+
 }  // namespace dart