[runtime] Introduce FastNewStrictArgumentsStub to optimize strict arguments.

src/heap/heap.h

 // 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.
 
 #ifndef V8_HEAP_HEAP_H_
 #define V8_HEAP_HEAP_H_
 
 #include <cmath>
 #include <map>
 
@@ skipping 501 matching lines @@
 
   static const int kTraceRingBufferSize = 512;
   static const int kStacktraceBufferSize = 512;
 
   static const double kMinHeapGrowingFactor;
   static const double kMaxHeapGrowingFactor;
   static const double kMaxHeapGrowingFactorMemoryConstrained;
   static const double kMaxHeapGrowingFactorIdle;
   static const double kTargetMutatorUtilization;
 
-  // Sloppy mode arguments object size.
-  static const int kSloppyArgumentsObjectSize =
-      JSObject::kHeaderSize + 2 * kPointerSize;
-
-  // Strict mode arguments has no callee so it is smaller.
-  static const int kStrictArgumentsObjectSize =
-      JSObject::kHeaderSize + 1 * kPointerSize;
-
-  // Indicies for direct access into argument objects.
-  static const int kArgumentsLengthIndex = 0;
-
-  // callee is only valid in sloppy mode.
-  static const int kArgumentsCalleeIndex = 1;
-
   static const int kNoGCFlags = 0;
   static const int kReduceMemoryFootprintMask = 1;
   static const int kAbortIncrementalMarkingMask = 2;
   static const int kFinalizeIncrementalMarkingMask = 4;
 
   // Making the heap iterable requires us to abort incremental marking.
   static const int kMakeHeapIterableMask = kAbortIncrementalMarkingMask;
 
   // The roots that have an index less than this are always in old space.
   static const int kOldSpaceRoots = 0x20;
@@ skipping 2084 matching lines @@
 
  private:
   friend class NewSpace;
   DISALLOW_COPY_AND_ASSIGN(InlineAllocationObserver);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_HEAP_HEAP_H_