Remove IC age from Code.

src/heap/heap.cc

 // Copyright 2012 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/accessors.h"
 #include "src/api.h"
 #include "src/base/bits.h"
 #include "src/base/once.h"
@@ skipping 3635 matching lines @@
       if (!allocation.To(&result)) return allocation;
       OnAllocationEvent(result, object_size);
     }
   }
 
   result->set_map_no_write_barrier(code_map());
   Code* code = Code::cast(result);
   DCHECK(isolate_->code_range() == NULL || !isolate_->code_range()->valid() ||
          isolate_->code_range()->contains(code->address()));
   code->set_gc_metadata(Smi::FromInt(0));
-  code->set_ic_age(global_ic_age_);
   return code;
 }
 
 
 AllocationResult Heap::CopyCode(Code* code) {
   AllocationResult allocation;
   HeapObject* new_constant_pool;
   if (FLAG_enable_ool_constant_pool &&
       code->constant_pool() != empty_constant_pool_array()) {
     // Copy the constant pool, since edits to the copied code may modify
@@ skipping 2821 matching lines @@
       static_cast<int>(object_sizes_last_time_[index]));
   CODE_AGE_LIST_COMPLETE(ADJUST_LAST_TIME_OBJECT_COUNT)
 #undef ADJUST_LAST_TIME_OBJECT_COUNT
 
   MemCopy(object_counts_last_time_, object_counts_, sizeof(object_counts_));
   MemCopy(object_sizes_last_time_, object_sizes_, sizeof(object_sizes_));
   ClearObjectStats();
 }
 }
 }  // namespace v8::internal