Revert "Heap profiler clean-up: remove unused methods"

src/heap-snapshot-generator.h

 // 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.
 
 #ifndef V8_HEAP_SNAPSHOT_GENERATOR_H_
 #define V8_HEAP_SNAPSHOT_GENERATOR_H_
 
 #include "src/profile-generator-inl.h"
 
 namespace v8 {
@@ skipping 314 matching lines @@
 
 
 // An implementation of V8 heap graph extractor.
 class V8HeapExplorer : public HeapEntriesAllocator {
  public:
   V8HeapExplorer(HeapSnapshot* snapshot,
                  SnapshottingProgressReportingInterface* progress,
                  v8::HeapProfiler::ObjectNameResolver* resolver);
   virtual ~V8HeapExplorer();
   virtual HeapEntry* AllocateEntry(HeapThing ptr);
+  void AddRootEntries(SnapshotFiller* filler);
   int EstimateObjectsCount(HeapIterator* iterator);
   bool IterateAndExtractReferences(SnapshotFiller* filler);
   void TagGlobalObjects();
   void TagCodeObject(Code* code);
   void TagBuiltinCodeObject(Code* code, const char* name);
   HeapEntry* AddEntry(Address address,
                       HeapEntry::Type type,
                       const char* name,
                       size_t size);
 
@@ skipping 120 matching lines @@
 
 class NativeGroupRetainedObjectInfo;
 
 
 // An implementation of retained native objects extractor.
 class NativeObjectsExplorer {
  public:
   NativeObjectsExplorer(HeapSnapshot* snapshot,
                         SnapshottingProgressReportingInterface* progress);
   virtual ~NativeObjectsExplorer();
+  void AddRootEntries(SnapshotFiller* filler);
   int EstimateObjectsCount();
   bool IterateAndExtractReferences(SnapshotFiller* filler);
 
  private:
   void FillRetainedObjects();
   void FillImplicitReferences();
   List<HeapObject*>* GetListMaybeDisposeInfo(v8::RetainedObjectInfo* info);
   void SetNativeRootReference(v8::RetainedObjectInfo* info);
   void SetRootNativeRootsReference();
   void SetWrapperNativeReferences(HeapObject* wrapper,
@@ skipping 118 matching lines @@
   friend class HeapSnapshotJSONSerializerEnumerator;
   friend class HeapSnapshotJSONSerializerIterator;
 
   DISALLOW_COPY_AND_ASSIGN(HeapSnapshotJSONSerializer);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_SNAPSHOT_GENERATOR_H_