Replace OStream with std::ostream.

src/x64/lithium-x64.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 <sstream>
+
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/hydrogen-osr.h"
 #include "src/lithium-inl.h"
 #include "src/x64/lithium-codegen-x64.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 338 matching lines @@
     return LDoubleStackSlot::Create(index, zone());
   } else {
     DCHECK(kind == GENERAL_REGISTERS);
     return LStackSlot::Create(index, zone());
   }
 }
 
 
 void LStoreNamedField::PrintDataTo(StringStream* stream) {
   object()->PrintTo(stream);
-  OStringStream os;
+  std::ostringstream os;
   os << hydrogen()->access() << " <- ";
-  stream->Add(os.c_str());
+  stream->Add(os.str().c_str());
   value()->PrintTo(stream);
 }
 
 
 void LStoreNamedGeneric::PrintDataTo(StringStream* stream) {
   object()->PrintTo(stream);
   stream->Add(".");
   stream->Add(String::cast(*name())->ToCString().get());
   stream->Add(" <- ");
   value()->PrintTo(stream);
@@ skipping 2308 matching lines @@
   LOperand* function = UseRegisterAtStart(instr->function());
   LAllocateBlockContext* result =
       new(zone()) LAllocateBlockContext(context, function);
   return MarkAsCall(DefineFixed(result, rsi), instr);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64