Replace OStream with std::ostream.

src/compiler/machine-type.h

 // Copyright 2014 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_COMPILER_MACHINE_TYPE_H_
 #define V8_COMPILER_MACHINE_TYPE_H_
 
+#include <iosfwd>
+
 #include "src/base/bits.h"
 #include "src/globals.h"
 #include "src/zone.h"
 
 namespace v8 {
 namespace internal {
-
-class OStream;
-
 namespace compiler {
 
 // Machine-level types and representations.
 // TODO(titzer): Use the real type system instead of MachineType.
 enum MachineType {
   // Representations.
   kRepBit = 1 << 0,
   kRepWord8 = 1 << 1,
   kRepWord16 = 1 << 2,
   kRepWord32 = 1 << 3,
@@ skipping 20 matching lines @@
   kMachInt16 = kRepWord16 | kTypeInt32,
   kMachUint16 = kRepWord16 | kTypeUint32,
   kMachInt32 = kRepWord32 | kTypeInt32,
   kMachUint32 = kRepWord32 | kTypeUint32,
   kMachInt64 = kRepWord64 | kTypeInt64,
   kMachUint64 = kRepWord64 | kTypeUint64,
   kMachPtr = (kPointerSize == 4) ? kRepWord32 : kRepWord64,
   kMachAnyTagged = kRepTagged | kTypeAny
 };
 
-OStream& operator<<(OStream& os, const MachineType& type);
+std::ostream& operator<<(std::ostream& os, const MachineType& type);
 
 typedef uint16_t MachineTypeUnion;
 
 // Globally useful machine types and constants.
 const MachineTypeUnion kRepMask = kRepBit | kRepWord8 | kRepWord16 |
                                   kRepWord32 | kRepWord64 | kRepFloat32 |
                                   kRepFloat64 | kRepTagged;
 const MachineTypeUnion kTypeMask = kTypeBool | kTypeInt32 | kTypeUint32 |
                                    kTypeInt64 | kTypeUint64 | kTypeNumber |
                                    kTypeAny;
@@ skipping 96 matching lines @@
   size_t parameter_count_;
   T* reps_;
 };
 
 typedef Signature<MachineType> MachineSignature;
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_MACHINE_TYPE_H_