Remove unused isolate parameter from NumberToSize and TryNumberToSize

src/conversions.h

 // Copyright 2011 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_CONVERSIONS_H_
 #define V8_CONVERSIONS_H_
 
 #include <limits>
 
 #include "src/base/logging.h"
@@ skipping 157 matching lines @@
 inline bool IsUint32Double(double value);
 
 // Convert from Number object to C integer.
 inline int32_t NumberToInt32(Object* number);
 inline uint32_t NumberToUint32(Object* number);
 inline int64_t NumberToInt64(Object* number);
 
 double StringToDouble(UnicodeCache* unicode_cache, Handle<String> string,
                       int flags, double empty_string_val = 0.0);
 
-
-inline bool TryNumberToSize(Isolate* isolate, Object* number, size_t* result);
-
+inline bool TryNumberToSize(Object* number, size_t* result);
 
 // Converts a number into size_t.
-inline size_t NumberToSize(Isolate* isolate, Object* number);
-
+inline size_t NumberToSize(Object* number);
 
 // returns DoubleToString(StringToDouble(string)) == string
 bool IsSpecialIndex(UnicodeCache* unicode_cache, String* string);
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CONVERSIONS_H_