Unbreak build

TBR=hpayer@chromium.org

Review URL: https://codereview.chromium.org/568433003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23995 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/heap/gc-tracer.cc

@@ -317,7 +317,7 @@ void GCTracer::PrintNVP() const {
   PrintF("nodes_promoted=%d ", heap_->nodes_promoted_);
   PrintF("promotion_rate=%.1f%% ", heap_->promotion_rate_);
   PrintF("semi_space_copy_rate=%.1f%% ", heap_->semi_space_copied_rate_);
-  PrintF("new_space_allocation_throughput=%d ",
+  PrintF("new_space_allocation_throughput=%" V8_PTR_PREFIX "d ",
          NewSpaceAllocationThroughputInBytesPerMillisecond());
 
   if (current_.type == Event::SCAVENGER) {