Rollback trunk to 3.21.15.

src/objects.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 2612 matching lines @@
   static Handle<Object> PreventExtensions(Handle<JSObject> object);
   MUST_USE_RESULT MaybeObject* PreventExtensions();
 
   // ES5 Object.freeze
   MUST_USE_RESULT MaybeObject* Freeze(Isolate* isolate);
 
 
   // Called the first time an object is observed with ES7 Object.observe.
   MUST_USE_RESULT MaybeObject* SetObserved(Isolate* isolate);
 
-  // Copy object.
-  static Handle<JSObject> Copy(Handle<JSObject> object);
-  static Handle<JSObject> DeepCopy(Handle<JSObject> object);
+  // Copy object
+  MUST_USE_RESULT MaybeObject* DeepCopy(Isolate* isolate);
 
   // Dispatched behavior.
   void JSObjectShortPrint(StringStream* accumulator);
   DECLARE_PRINTER(JSObject)
   DECLARE_VERIFIER(JSObject)
 #ifdef OBJECT_PRINT
   void PrintProperties(FILE* out = stdout);
   void PrintElements(FILE* out = stdout);
   void PrintTransitions(FILE* out = stdout);
 #endif
@@ skipping 2502 matching lines @@
     kAfterLastCodeAge,
     kLastCodeAge = kAfterLastCodeAge - 1,
     kCodeAgeCount = kAfterLastCodeAge - 1
   };
 #undef DECLARE_CODE_AGE_ENUM
 
   // Code aging.  Indicates how many full GCs this code has survived without
   // being entered through the prologue.  Used to determine when it is
   // relatively safe to flush this code object and replace it with the lazy
   // compilation stub.
-  static void MakeCodeAgeSequenceYoung(byte* sequence, Isolate* isolate);
+  static void MakeCodeAgeSequenceYoung(byte* sequence);
   void MakeOlder(MarkingParity);
   static bool IsYoungSequence(byte* sequence);
   bool IsOld();
   int GetAge();
 
   void PrintDeoptLocation(int bailout_id);
   bool CanDeoptAt(Address pc);
 
 #ifdef VERIFY_HEAP
   void VerifyEmbeddedMapsDependency();
@@ skipping 125 matching lines @@
 
  private:
   friend class RelocIterator;
 
   // Code aging
   byte* FindCodeAgeSequence();
   static void GetCodeAgeAndParity(Code* code, Age* age,
                                   MarkingParity* parity);
   static void GetCodeAgeAndParity(byte* sequence, Age* age,
                                   MarkingParity* parity);
-  static Code* GetCodeAgeStub(Isolate* isolate, Age age, MarkingParity parity);
+  static Code* GetCodeAgeStub(Age age, MarkingParity parity);
 
   // Code aging -- platform-specific
-  static void PatchPlatformCodeAge(Isolate* isolate,
-                                   byte* sequence, Age age,
+  static void PatchPlatformCodeAge(byte* sequence, Age age,
                                    MarkingParity parity);
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(Code);
 };
 
 
 class CompilationInfo;
 
 // This class describes the layout of dependent codes array of a map. The
 // array is partitioned into several groups of dependent codes. Each group
@@ skipping 4926 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_