Move StringPiece into the base namespace. It is colliding

chrome/browser/browser_main.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 <algorithm>
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
@@ skipping 172 matching lines @@
         &value);
   }
 
   std::string html_data;
 };
 
 base::LazyInstance<LazyDirectoryListerCacher> lazy_dir_lister(
     base::LINKER_INITIALIZED);
 
 // This is called indirectly by the network layer to access resources.
-StringPiece NetResourceProvider(int key) {
+base::StringPiece NetResourceProvider(int key) {
   if (IDR_DIR_HEADER_HTML == key)
-    return StringPiece(lazy_dir_lister.Pointer()->html_data);
+    return base::StringPiece(lazy_dir_lister.Pointer()->html_data);
 
   return ResourceBundle::GetSharedInstance().GetRawDataResource(key);
 }
 
 void RunUIMessageLoop(BrowserProcess* browser_process) {
 #if defined(TOOLKIT_VIEWS)
   views::AcceleratorHandler accelerator_handler;
   MessageLoopForUI::current()->Run(&accelerator_handler);
 #elif defined(OS_LINUX)
   MessageLoopForUI::current()->Run(NULL);
@@ skipping 638 matching lines @@
   if (metrics)
     metrics->Stop();
 
   // browser_shutdown takes care of deleting browser_process, so we need to
   // release it.
   browser_process.release();
   browser_shutdown::Shutdown();
 
   return result_code;
 }