Change the hydrogen timing data to include zone allocation.

src/zone-inl.h

Index: src/zone-inl.h
diff --git a/src/zone-inl.h b/src/zone-inl.h
index 5893a2f80ebbe97178e199a127049d53ae4eac77..467296039c2cc0d013abcdd0ea889a3827a65542 100644
--- a/src/zone-inl.h
+++ b/src/zone-inl.h
@@ -1,4 +1,4 @@
-// Copyright 2006-2008 the V8 project authors. All rights reserved.
+// Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
@@ -47,6 +47,7 @@ inline void* Zone::New(int size) {
 
   // Check that the result has the proper alignment and return it.
   ASSERT(IsAddressAligned(result, kAlignment, 0));
+  allocation_size_ += size;
   return reinterpret_cast<void*>(result);
 }