More changes to use #ifndef PRODUCT ... #endif explicitly instead of relying on compiler magic.

runtime/vm/heap.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/heap.h"
 
 #include "platform/assert.h"
 #include "platform/utils.h"
 #include "vm/flags.h"
 #include "vm/isolate.h"
@@ skipping 713 matching lines @@
     new_space_.AddGCTime(delta);
     new_space_.IncrementCollections();
   } else {
     old_space_.AddGCTime(delta);
     old_space_.IncrementCollections();
   }
   stats_.after_.new_ = new_space_.GetCurrentUsage();
   stats_.after_.old_ = old_space_.GetCurrentUsage();
   ASSERT((space == kNew && gc_new_space_in_progress_) ||
          (space == kOld && gc_old_space_in_progress_));
+#ifndef PRODUCT
   if (FLAG_support_service && Service::gc_stream.enabled()) {
     ServiceEvent event(Isolate::Current(), ServiceEvent::kGC);
     event.set_gc_stats(&stats_);
     Service::HandleEvent(&event);
   }
+#endif  // !PRODUCT
 }
 
 
 void Heap::PrintStats() {
   if (!FLAG_verbose_gc) return;
 
   if ((FLAG_verbose_gc_hdr != 0) &&
       (((stats_.num_ - 1) % FLAG_verbose_gc_hdr) == 0)) {
     OS::PrintErr("[    GC    |  space  | count | start | gc time | "
                  "new gen (KB) | old gen (KB) | timers | data ]\n"
@@ skipping 123 matching lines @@
   Dart::vm_isolate()->heap()->WriteProtect(false);
 }
 
 
 WritableVMIsolateScope::~WritableVMIsolateScope() {
   ASSERT(Dart::vm_isolate()->heap()->UsedInWords(Heap::kNew) == 0);
   Dart::vm_isolate()->heap()->WriteProtect(true);
 }
 
 }  // namespace dart