Fix product build.

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 819 matching lines @@
     MicrosecondsToMilliseconds(stats_.times_[2]),
     MicrosecondsToMilliseconds(stats_.times_[3]),
     stats_.data_[0],
     stats_.data_[1],
     stats_.data_[2],
     stats_.data_[3]);
 }
 
 
 void Heap::PrintStatsToTimeline(TimelineEventScope* event) {
+#if !defined(PRODUCT)
   if ((event == NULL) || !event->enabled()) {
     return;
   }
   event->SetNumArguments(12);
   event->FormatArgument(0,
                         "Before.New.Used (kB)",
                         "%" Pd "",
                         RoundWordsToKB(stats_.before_.new_.used_in_words));
   event->FormatArgument(1,
                         "After.New.Used (kB)",
@@ skipping 34 matching lines @@
                         "%" Pd "",
                         RoundWordsToKB(stats_.after_.new_.external_in_words));
   event->FormatArgument(10,
                         "Before.Old.External (kB)",
                         "%" Pd "",
                         RoundWordsToKB(stats_.before_.old_.external_in_words));
   event->FormatArgument(11,
                         "After.Old.External (kB)",
                         "%" Pd "",
                         RoundWordsToKB(stats_.after_.old_.external_in_words));
+#endif  // !defined(PRODUCT)
 }
 
 
 NoHeapGrowthControlScope::NoHeapGrowthControlScope()
     : StackResource(Thread::Current()) {
     Heap* heap = reinterpret_cast<Isolate*>(isolate())->heap();
     current_growth_controller_state_ = heap->GrowthControlState();
     heap->DisableGrowthControl();
 }
 
 
 NoHeapGrowthControlScope::~NoHeapGrowthControlScope() {
     Heap* heap = reinterpret_cast<Isolate*>(isolate())->heap();
     heap->SetGrowthControlState(current_growth_controller_state_);
 }
 
 
 WritableVMIsolateScope::WritableVMIsolateScope(Thread* thread)
     : StackResource(thread) {
   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