content: Update the include paths of base/string_piece.h to its new location.

content/shell/shell_content_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.
 
 #include "content/shell/shell_content_client.h"
 
 #include "base/command_line.h"
-#include "base/string_piece.h"
+#include "base/strings/string_piece.h"
 #include "base/utf_string_conversions.h"
 #include "content/public/common/content_switches.h"
 #include "content/shell/shell_switches.h"
 #include "grit/shell_resources.h"
 #include "grit/webkit_resources.h"
 #include "grit/webkit_strings.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "webkit/user_agent/user_agent_util.h"
 
@@ skipping 81 matching lines @@
 base::RefCountedStaticMemory* ShellContentClient::GetDataResourceBytes(
     int resource_id) const {
   return ResourceBundle::GetSharedInstance().LoadDataResourceBytes(resource_id);
 }
 
 gfx::Image& ShellContentClient::GetNativeImageNamed(int resource_id) const {
   return ResourceBundle::GetSharedInstance().GetNativeImageNamed(resource_id);
 }
 
 }  // namespace content