[heap] MinorMC: Only iterate new space global handles for ptr updates

src/global-handles.h

 // Copyright 2011 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_GLOBAL_HANDLES_H_
 #define V8_GLOBAL_HANDLES_H_
 
 #include <type_traits>
 
 #include "include/v8.h"
@@ skipping 112 matching lines @@
   // Returns the number of freed nodes.
   int PostGarbageCollectionProcessing(
       GarbageCollector collector, const v8::GCCallbackFlags gc_callback_flags);
 
   // Iterates over all strong handles.
   void IterateStrongRoots(RootVisitor* v);
 
   // Iterates over all handles.
   void IterateAllRoots(RootVisitor* v);
 
+  void IterateAllNewSpaceRoots(RootVisitor* v);
+
   // Iterates over all handles that have embedder-assigned class ID.
   void IterateAllRootsWithClassIds(v8::PersistentHandleVisitor* v);
 
   // Iterates over all handles in the new space that have embedder-assigned
   // class ID.
   void IterateAllRootsInNewSpaceWithClassIds(v8::PersistentHandleVisitor* v);
 
   // Iterate over all handles in the new space that are weak, unmodified
   // and have class IDs
   void IterateWeakRootsInNewSpaceWithClassIds(v8::PersistentHandleVisitor* v);
@@ skipping 185 matching lines @@
   int singleton_handles_[NUMBER_OF_SINGLETON_HANDLES];
 
   DISALLOW_COPY_AND_ASSIGN(EternalHandles);
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_GLOBAL_HANDLES_H_