Heap profiler clean-up: remove dead code

src/heap-snapshot-generator.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/heap-snapshot-generator-inl.h"
 
 #include "src/allocation-tracker.h"
 #include "src/code-stubs.h"
@@ skipping 2282 matching lines @@
       0);
 }
 
 
 NativeObjectsExplorer::NativeObjectsExplorer(
     HeapSnapshot* snapshot,
     SnapshottingProgressReportingInterface* progress)
     : isolate_(snapshot->profiler()->heap_object_map()->heap()->isolate()),
       snapshot_(snapshot),
       names_(snapshot_->profiler()->names()),
-      progress_(progress),
       embedder_queried_(false),
       objects_by_info_(RetainedInfosMatch),
       native_groups_(StringsMatch),
       filler_(NULL) {
   synthetic_entries_allocator_ =
       new BasicHeapEntriesAllocator(snapshot, HeapEntry::kSynthetic);
   native_entries_allocator_ =
       new BasicHeapEntriesAllocator(snapshot, HeapEntry::kNative);
 }
 
@@ skipping 826 matching lines @@
   writer_->AddString("\"<dummy>\"");
   for (int i = 1; i < sorted_strings.length(); ++i) {
     writer_->AddCharacter(',');
     SerializeString(sorted_strings[i]);
     if (writer_->aborted()) return;
   }
 }
 
 
 } }  // namespace v8::internal