Remove use of <iostream> where unnecessary.

media/tools/shader_bench/shader_bench.cc

 // Copyright (c) 2011 The Chromium 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 <deque>
-#include <iostream>
+#include <ostream>
 #include <stdio.h>
 #include <stdlib.h>
 
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/string_number_conversions.h"
 #include "base/time.h"
 #include "media/base/callback.h"
 #include "media/base/video_frame.h"
@@ skipping 137 matching lines @@
     scoped_ptr<GPUPainter> painter(painters[i].painter);
     painter->LoadFrames(&frames);
     painter->SetGLContext(surface, context);
     painter->Initialize(width, height);
     printf("Running %s tests...", painters[i].name);
     RunTest(window.get(), painter.get());
   }
 
   return 0;
 }