Remove HeapSnapshotsCollection class

test/cctest/cctest.h

 // Copyright 2008 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:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 345 matching lines @@
 class HeapObjectsTracker {
  public:
   HeapObjectsTracker() {
     heap_profiler_ = i::Isolate::Current()->heap_profiler();
     CHECK_NE(NULL, heap_profiler_);
     heap_profiler_->StartHeapObjectsTracking(true);
   }
 
   ~HeapObjectsTracker() {
     i::Isolate::Current()->heap()->CollectAllAvailableGarbage();
-    CHECK_EQ(0, heap_profiler_->FindUntrackedObjects());
+    CHECK_EQ(0, heap_profiler_->heap_object_map()->FindUntrackedObjects());
     heap_profiler_->StopHeapObjectsTracking();
   }
 
  private:
   i::HeapProfiler* heap_profiler_;
 };
 
 
 #endif  // ifndef CCTEST_H_