Remove use of <iostream> where unnecessary.

media/tools/tile_render_bench/tile_render_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.
 
 // This tool is used to benchmark the technique of using tiles to render a
 // large tecture. This tool runs with different tile sizes so that developer
 // can determine the right dimensions for the tiles.
 
-#include <iostream>
+#include <ostream>
 
 #include <X11/keysym.h>
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
 
 #include "base/at_exit.h"
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/task.h"
@@ skipping 217 matching lines @@
 
   // Cleanup GL.
   glXMakeCurrent(g_display, 0, NULL);
   glXDestroyContext(g_display, g_gl_context);
 
   // Destroy window and display.
   XDestroyWindow(g_display, g_window);
   XCloseDisplay(g_display);
   return 0;
 }