Refactor storage of global handles.

src/heap.h

 // Copyright 2011 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 1615 matching lines @@
   intptr_t* code_space_capacity;             //  8
   intptr_t* map_space_size;                  //  9
   intptr_t* map_space_capacity;              // 10
   intptr_t* cell_space_size;                 // 11
   intptr_t* cell_space_capacity;             // 12
   intptr_t* lo_space_size;                   // 13
   int* global_handle_count;             // 14
   int* weak_global_handle_count;        // 15
   int* pending_global_handle_count;     // 16
   int* near_death_global_handle_count;  // 17
-  int* destroyed_global_handle_count;   // 18
+  int* free_global_handle_count;        // 18
   intptr_t* memory_allocator_size;           // 19
   intptr_t* memory_allocator_capacity;       // 20
   int* objects_per_type;                // 21
   int* size_per_type;                   // 22
   int* os_error;                        // 23
   int* end_marker;                      // 24
 };
 
 
 class AlwaysAllocateScope {
@@ skipping 615 matching lines @@
   DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer);
 };
 #endif  // DEBUG || LIVE_OBJECT_LIST
 
 
 } }  // namespace v8::internal
 
 #undef HEAP
 
 #endif  // V8_HEAP_H_