Move StringPiece into the base namespace. It is colliding

chrome/browser/dom_ui/new_tab_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 "build/build_config.h"
 
 #include "chrome/browser/dom_ui/new_tab_ui.h"
 
 #include <set>
 
@@ skipping 403 matching lines @@
   first_view_ = false;
 
   // Control fade and resize animations.
   std::wstring anim =
       Animation::ShouldRenderRichAnimation() ? L"true" : L"false";
   localized_strings.SetString(L"anim", anim);
 
   // In case we have the new new tab page enabled we first try to read the file
   // provided on the command line. If that fails we just get the resource from
   // the resource bundle.
-  StringPiece new_tab_html;
+  base::StringPiece new_tab_html;
   std::string new_tab_html_str;
   new_tab_html_str = GetCustomNewTabPageFromCommandLine();
 
   if (!new_tab_html_str.empty()) {
-    new_tab_html = StringPiece(new_tab_html_str);
+    new_tab_html = base::StringPiece(new_tab_html_str);
   }
 
   if (new_tab_html.empty()) {
     new_tab_html = ResourceBundle::GetSharedInstance().GetRawDataResource(
         NewTabUI::UseOldNewTabPage() ?
             IDR_NEW_TAB_HTML :
             IDR_NEW_NEW_TAB_HTML);
   }
 
   full_html_.assign(new_tab_html.data(), new_tab_html.size());
@@ skipping 63 matching lines @@
   localized_strings.SetString(L"title",
       l10n_util::GetString(IDS_NEW_TAB_TITLE));
   localized_strings.SetString(L"content",
       l10n_util::GetStringF(IDS_NEW_TAB_OTR_MESSAGE,
           l10n_util::GetString(IDS_LEARN_MORE_INCOGNITO_URL)));
   localized_strings.SetString(L"bookmarkbarattached",
       bookmark_bar_attached_ ? "true" : "false");
 
   SetFontAndTextDirection(&localized_strings);
 
-  static const StringPiece incognito_tab_html(
+  static const base::StringPiece incognito_tab_html(
       ResourceBundle::GetSharedInstance().GetRawDataResource(
           IDR_INCOGNITO_TAB_HTML));
 
   full_html_ = jstemplate_builder::GetI18nTemplateHtml(incognito_tab_html,
                                                        &localized_strings);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // MostVisitedPage
 
@@ skipping 1203 matching lines @@
 bool NewTabUI::WebResourcesEnabled() {
   const CommandLine* command_line = CommandLine::ForCurrentProcess();
   return !command_line->HasSwitch(switches::kDisableWebResources);
 }
 
 // static
 bool NewTabUI::FirstRunDisabled() {
   const CommandLine* command_line = CommandLine::ForCurrentProcess();
   return command_line->HasSwitch(switches::kDisableNewTabFirstRun);
 }