Replace OStream with std::ostream.

src/types.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_TYPES_H_
 #define V8_TYPES_H_
 
 #include "src/conversions.h"
 #include "src/factory.h"
 #include "src/handles.h"
@@ skipping 460 matching lines @@
   static inline TypeImpl* cast(typename Config::Base* object);
 
   template<class OtherTypeImpl>
   static TypeHandle Convert(
       typename OtherTypeImpl::TypeHandle type, Region* region);
 
   // Printing.
 
   enum PrintDimension { BOTH_DIMS, SEMANTIC_DIM, REPRESENTATION_DIM };
 
-  void PrintTo(OStream& os, PrintDimension dim = BOTH_DIMS);  // NOLINT
+  void PrintTo(std::ostream& os, PrintDimension dim = BOTH_DIMS);  // NOLINT
 
 #ifdef DEBUG
   void Print();
 #endif
 
  protected:
   // Friends.
 
   template<class> friend class Iterator;
   template<class> friend class TypeImpl;
@@ skipping 107 matching lines @@
   static bitset Glb(TypeImpl* type);  // greatest lower bound that's a bitset
   static bitset Lub(TypeImpl* type);  // least upper bound that's a bitset
   static bitset Lub(i::Object* value);
   static bitset Lub(double value);
   static bitset Lub(int32_t value);
   static bitset Lub(uint32_t value);
   static bitset Lub(i::Map* map);
   static bitset Lub(Limits lim);
 
   static const char* Name(bitset);
-  static void Print(OStream& os, bitset);  // NOLINT
+  static void Print(std::ostream& os, bitset);  // NOLINT
 #ifdef DEBUG
   static void Print(bitset);
 #endif
 
  private:
   struct BitsetMin{
     bitset bits;
     double min;
   };
   static const BitsetMin BitsetMins31[];
@@ skipping 422 matching lines @@
   bool Narrows(BoundsImpl that) {
     return that.lower->Is(this->lower) && this->upper->Is(that.upper);
   }
 };
 
 typedef BoundsImpl<ZoneTypeConfig> Bounds;
 
 } }  // namespace v8::internal
 
 #endif  // V8_TYPES_H_