Move StringPiece into the base namespace. It is colliding

chrome/browser/dom_ui/downloads_ui.cc

 // Copyright (c) 2006-2009 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 "chrome/browser/dom_ui/downloads_ui.h"
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "base/string_piece.h"
 #include "base/thread.h"
@@ skipping 81 matching lines @@
       l10n_util::GetString(IDS_DOWNLOAD_LINK_SHOW));
   localized_strings.SetString(L"control_cancel",
       l10n_util::GetString(IDS_DOWNLOAD_LINK_CANCEL));
   localized_strings.SetString(L"control_resume",
       l10n_util::GetString(IDS_DOWNLOAD_LINK_RESUME));
   localized_strings.SetString(L"control_removefromlist",
       l10n_util::GetString(IDS_DOWNLOAD_LINK_REMOVE));
 
   SetFontAndTextDirection(&localized_strings);
 
-  static const StringPiece downloads_html(
+  static const base::StringPiece downloads_html(
       ResourceBundle::GetSharedInstance().GetRawDataResource(
           IDR_DOWNLOADS_HTML));
   const std::string full_html = jstemplate_builder::GetI18nTemplateHtml(
       downloads_html, &localized_strings);
 
   scoped_refptr<RefCountedBytes> html_bytes(new RefCountedBytes);
   html_bytes->data.resize(full_html.size());
   std::copy(full_html.begin(), full_html.end(), html_bytes->data.begin());
 
   SendResponse(request_id, html_bytes);
@@ skipping 23 matching lines @@
       NewRunnableMethod(&chrome_url_data_manager,
           &ChromeURLDataManager::AddDataSource,
           html_source));
 }
 
 // static
 bool DownloadsUI::GetFaviconResourceBytes(std::vector<unsigned char>* bytes) {
   return ResourceBundle::GetSharedInstance().
       LoadImageResourceBytes(IDR_DOWNLOADS_FAVICON, bytes);
 }