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

src/hydrogen.cc

 // Copyright 2013 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/hydrogen.h"
 
 #include <sstream>
 
 #include "src/v8.h"
 
@@ skipping 10263 matching lines @@
 HInstruction* HOptimizedGraphBuilder::BuildStringCharCodeAt(
     HValue* string,
     HValue* index) {
   if (string->IsConstant() && index->IsConstant()) {
     HConstant* c_string = HConstant::cast(string);
     HConstant* c_index = HConstant::cast(index);
     if (c_string->HasStringValue() && c_index->HasNumberValue()) {
       int32_t i = c_index->NumberValueAsInteger32();
       Handle<String> s = c_string->StringValue();
       if (i < 0 || i >= s->length()) {
-        return New<HConstant>(base::OS::nan_value());
+        return New<HConstant>(std::numeric_limits<double>::quiet_NaN());
       }
       return New<HConstant>(s->Get(i));
     }
   }
   string = BuildCheckString(string);
   index = Add<HBoundsCheck>(index, AddLoadStringLength(string));
   return New<HStringCharCodeAt>(string, index);
 }
 
 
@@ skipping 3168 matching lines @@
   if (ShouldProduceTraceOutput()) {
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 } }  // namespace v8::internal