Use a direct include of strings headers in content/renderer and content/shell.

content/renderer/renderer_clipboard_client.cc

 // Copyright (c) 2012 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 file provides the embedder's side of random webkit glue functions.
 
 #include "content/renderer/renderer_clipboard_client.h"
 
 #include "base/shared_memory.h"
-#include "base/string16.h"
+#include "base/strings/string16.h"
 #include "content/common/clipboard_messages.h"
 #include "content/public/renderer/content_renderer_client.h"
 #include "content/renderer/render_thread_impl.h"
 #include "ui/base/clipboard/clipboard.h"
 #include "ui/gfx/size.h"
 #include "webkit/glue/scoped_clipboard_writer_glue.h"
 
 namespace content {
 
 namespace {
@@ skipping 162 matching lines @@
   RenderThreadImpl::current()->Send(
       new ClipboardHostMsg_ReadData(format, data));
 }
 
 webkit_glue::ClipboardClient::WriteContext*
 RendererClipboardClient::CreateWriteContext() {
   return new RendererClipboardWriteContext;
 }
 
 }  // namespace content