Remove use of <iostream> where unnecessary.

remoting/host/capturer_mac_unittest.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 "remoting/host/capturer.h"
 
 #include <ApplicationServices/ApplicationServices.h>
 
-#include <iostream>
+#include <ostream>
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace remoting {
 
 class CapturerMacTest : public testing::Test {
  protected:
   virtual void SetUp() {
@@ skipping 87 matching lines @@
   for (SkRegion::Iterator i(region); !i.done(); i.next()) {
     const SkIRect& r = i.rect();
     out << "(" << r.fLeft << ","  << r.fTop << ","
         << r.fRight  << ","  << r.fBottom << ")";
   }
   out << ")";
   return out;
 }
 
 }  // namespace gfx