Ignore evacuation canditate pages when verifying spaces.

src/spaces.h

Index: src/spaces.h
diff --git a/src/spaces.h b/src/spaces.h
index 6ff3ee3694dccd769a61bbc35342b66a317342f7..a19dfd284491dfd52cd2a3f1006f92940c37ef34 100644
--- a/src/spaces.h
+++ b/src/spaces.h
@@ -1206,6 +1206,20 @@ class HeapObjectIterator: public ObjectIterator {
     return NULL;
   }
 
+  // Advance to the next object, skipping free spaces, evacuation canditates,
+  // and other fillers and skipping the special garbage section of which 
+  // there is one per space. Returns NULL when the iteration has ended.
+  inline HeapObject* NextIgnoreEvacuationCandidates() {
+    do {
+      if (cur_addr_ != 0 &&
+          !Page::FromAddress(cur_addr_ - 1)->IsEvacuationCandidate()) {
+        HeapObject* next_obj = FromCurrentPage();
+        if (next_obj != NULL) return next_obj;
+      }
+    } while (AdvanceToNextPage());
+    return NULL;
+  }
+
   virtual HeapObject* next_object() {
     return Next();
   }