When reading a full snapshot use the class id from the snapshot instead of generating a new one. Th…

runtime/vm/heap.cc

Index: runtime/vm/heap.cc
===================================================================
--- runtime/vm/heap.cc	(revision 33311)
+++ runtime/vm/heap.cc	(working copy)
@@ -7,7 +7,6 @@
 #include "platform/assert.h"
 #include "platform/utils.h"
 #include "vm/flags.h"
-#include "vm/heap_histogram.h"
 #include "vm/isolate.h"
 #include "vm/object.h"
 #include "vm/object_set.h"
@@ -182,7 +181,6 @@
       old_space_->MarkSweep(invoke_api_callbacks);
       RecordAfterGC();
       PrintStats();
-      UpdateObjectHistogram();
       break;
     }
     default:
@@ -191,13 +189,6 @@
 }
 
 
-void Heap::UpdateObjectHistogram() {
-  Isolate* isolate = Isolate::Current();
-  if (isolate->object_histogram() == NULL) return;
-  isolate->object_histogram()->Collect();
-}
-
-
 void Heap::UpdateClassHeapStatsBeforeGC(Heap::Space space) {
   Isolate* isolate = Isolate::Current();
   ClassTable* class_table = isolate->class_table();
@@ -231,7 +222,6 @@
   old_space_->MarkSweep(kInvokeApiCallbacks);
   RecordAfterGC();
   PrintStats();
-  UpdateObjectHistogram();
 }