Fix for HeapSnapshotAddressReuse test case.

test/cctest/test-heap-profiler.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 //
 // Tests for heap profiler
 
 #include <ctype.h>
 
 #include "v8.h"
 
 #include "cctest.h"
 #include "hashmap.h"
@@ skipping 376 matching lines @@
   CHECK_NE(NULL, array_node);
   int wrong_count = 0;
   for (int i = 0, count = array_node->GetChildrenCount(); i < count; ++i) {
     const v8::HeapGraphEdge* prop = array_node->GetChild(i);
     if (prop->GetType() != v8::HeapGraphEdge::kElement)
       continue;
     v8::SnapshotObjectId id = prop->GetToNode()->GetId();
     if (id < maxId1)
       ++wrong_count;
   }
-  // FIXME: Object ids should be unique but it is not so at the moment.
-  CHECK_NE(0, wrong_count);
+  CHECK_EQ(0, wrong_count);
 }
 
 
 TEST(HeapEntryIdsAndArrayShift) {
   v8::HandleScope scope;
   LocalContext env;
 
   CompileRun(
       "function AnObject() {\n"
       "    this.first = 'first';\n"
@@ skipping 1286 matching lines @@
   const v8::HeapGraphNode* map =
       GetProperty(global_object, v8::HeapGraphEdge::kInternal, "map");
   CHECK_NE(NULL, map);
   const v8::HeapGraphNode* own_descriptors = GetProperty(
       map, v8::HeapGraphEdge::kInternal, "descriptors");
   CHECK_NE(NULL, own_descriptors);
   const v8::HeapGraphNode* own_transitions = GetProperty(
       map, v8::HeapGraphEdge::kInternal, "transitions");
   CHECK_EQ(NULL, own_transitions);
 }