Another round of MSVC fixes.

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 <algorithm>
 
 #include "src/v8.h"
 
@@ skipping 3440 matching lines @@
           ConsStringIteratorOp op;
           StringCharacterStream stream(String::cast(script->source()),
                                        &op,
                                        shared->start_position());
           // fun->end_position() points to the last character in the stream. We
           // need to compensate by adding one to calculate the length.
           int source_len =
               shared->end_position() - shared->start_position() + 1;
           for (int i = 0; i < source_len; i++) {
             if (stream.HasMore()) {
-              os.put(stream.GetNext());
+              os << AsUC16(stream.GetNext());
             }
           }
         }
 
         os << "\n--- END ---\n";
       }
     }
   }
 
   int inline_id = next_inline_id_++;
@@ skipping 8913 matching lines @@
   if (ShouldProduceTraceOutput()) {
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 } }  // namespace v8::internal