A64: Synchronize with r17525.

src/isolate.h

 // Copyright 2012 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 980 matching lines @@
 
   unibrow::Mapping<unibrow::Ecma262Canonicalize>*
       interp_canonicalize_mapping() {
     return &interp_canonicalize_mapping_;
   }
 
   void* PreallocatedStorageNew(size_t size);
   void PreallocatedStorageDelete(void* p);
   void PreallocatedStorageInit(size_t size);
 
+  inline bool IsCodePreAgingActive();
+
 #ifdef ENABLE_DEBUGGER_SUPPORT
   Debugger* debugger() {
     if (!NoBarrier_Load(&debugger_initialized_)) InitializeDebugger();
     return debugger_;
   }
   Debug* debug() {
     if (!NoBarrier_Load(&debugger_initialized_)) InitializeDebugger();
     return debug_;
   }
 #endif
@@ skipping 497 matching lines @@
 
 // Mark the native context with out of memory.
 inline void Context::mark_out_of_memory() {
   native_context()->set_out_of_memory(GetIsolate()->heap()->true_value());
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_ISOLATE_H_