Remove deprecated v8::base::OS::nan_value().

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 2893 matching lines @@
 
 
 void Heap::CreateInitialObjects() {
   HandleScope scope(isolate());
   Factory* factory = isolate()->factory();
 
   // The -0 value must be set before NewNumber works.
   set_minus_zero_value(*factory->NewHeapNumber(-0.0, IMMUTABLE, TENURED));
   DCHECK(std::signbit(minus_zero_value()->Number()) != 0);
 
-  set_nan_value(
-      *factory->NewHeapNumber(base::OS::nan_value(), IMMUTABLE, TENURED));
+  set_nan_value(*factory->NewHeapNumber(
+      std::numeric_limits<double>::quiet_NaN(), IMMUTABLE, TENURED));
   set_infinity_value(*factory->NewHeapNumber(V8_INFINITY, IMMUTABLE, TENURED));
 
   // The hole has not been created yet, but we want to put something
   // predictable in the gaps in the string table, so lets make that Smi zero.
   set_the_hole_value(reinterpret_cast<Oddball*>(Smi::FromInt(0)));
 
   // Allocate initial string table.
   set_string_table(*StringTable::New(isolate(), kInitialStringTableSize));
 
   // Finish initializing oddballs after creating the string table.
@@ skipping 3512 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