Move StringPiece into the base namespace. It is colliding

chrome/renderer/renderer_glue.cc

 // Copyright (c) 2006-2008 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 "build/build_config.h"
 
 #include <vector>
 
@@ skipping 140 matching lines @@
   WideToUTF8(url, url_length, &url_string);
   const std::string host = GURL(url_string).host();
   if (!host.empty())
     DnsPrefetchCString(host.data(), host.length());
 }
 
 void AppendToLog(const char* file, int line, const char* msg) {
   logging::LogMessage(file, line).stream() << msg;
 }
 
-StringPiece GetDataResource(int resource_id) {
+base::StringPiece GetDataResource(int resource_id) {
   return ResourceBundle::GetSharedInstance().GetRawDataResource(resource_id);
 }
 
 #if defined(OS_WIN)
 HCURSOR LoadCursor(int cursor_id) {
   return ResourceBundle::GetSharedInstance().LoadCursor(cursor_id);
 }
 #endif
 
 // Clipboard glue
@@ skipping 71 matching lines @@
 
 void CloseIdleConnections() {
   RenderThread::current()->CloseIdleConnections();
 }
 
 void SetCacheMode(bool enabled) {
   RenderThread::current()->SetCacheMode(enabled);
 }
 
 }  // namespace webkit_glue