Move precompilation-related flags to flags list.

runtime/vm/dart_api_impl_test.cc

Index: runtime/vm/dart_api_impl_test.cc
diff --git a/runtime/vm/dart_api_impl_test.cc b/runtime/vm/dart_api_impl_test.cc
index 8e7d69805ca5320a13e00494779ce0391234b40e..91043ed161fc8670ff901a3a3b1233f590e3f704 100644
--- a/runtime/vm/dart_api_impl_test.cc
+++ b/runtime/vm/dart_api_impl_test.cc
@@ -19,7 +19,6 @@
 
 namespace dart {
 
-DECLARE_FLAG(int, optimization_counter_threshold);
 DECLARE_FLAG(bool, verify_acquired_data);
 DECLARE_FLAG(bool, ignore_patch_signature_mismatch);
 
@@ -1906,6 +1905,9 @@ TEST_CASE(ExternalByteDataAccess) {
 }
 
 
+#ifndef PRODUCT
+
+
 static const intptr_t kOptExtLength = 16;
 static int8_t opt_data[kOptExtLength] = { 0x01, 0x02, 0x03, 0x04,
                                           0x05, 0x06, 0x07, 0x08,
@@ -1974,6 +1976,9 @@ TEST_CASE(OptimizedExternalByteDataAccess) {
 }
 
 
+#endif  // !PRODUCT
+
+
 static void TestTypedDataDirectAccess() {
   Dart_Handle str = Dart_NewStringFromCString("junk");
   Dart_Handle byte_array = Dart_NewTypedData(Dart_TypedData_kUint8, 10);