Move StringPiece into the base namespace. It is colliding

chrome/browser/ssl/ssl_policy.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.
 
 #include "chrome/browser/ssl/ssl_policy.h"
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "base/base_switches.h"
 #include "base/command_line.h"
@@ skipping 268 matching lines @@
   strings.SetString(L"moreInfoTitle",
                     l10n_util::GetString(IDS_CERT_ERROR_EXTRA_INFO_TITLE));
   SSLBlockingPage::SetExtraInfo(&strings, error_info.extra_information());
 
   strings.SetString(L"back", l10n_util::GetString(IDS_SSL_ERROR_PAGE_BACK));
 
   strings.SetString(L"textdirection",
       (l10n_util::GetTextDirection() == l10n_util::RIGHT_TO_LEFT) ?
       L"rtl" : L"ltr");
 
-  static const StringPiece html(
+  static const base::StringPiece html(
       ResourceBundle::GetSharedInstance().GetRawDataResource(
           IDR_SSL_ERROR_HTML));
 
   std::string html_text(jstemplate_builder::GetI18nTemplateHtml(html,
                                                                 &strings));
 
   TabContents* tab  = handler->GetTabContents();
   int cert_id = CertStore::GetSharedInstance()->StoreCert(
       handler->ssl_info().cert,
       tab->render_view_host()->process()->id());
@@ skipping 55 matching lines @@
     // mark the main frame's origin as broken too.
     MarkOriginAsBroken(info->main_frame_origin(), info->child_id());
   }
 }
 
 void SSLPolicy::UpdateStateForUnsafeContent(SSLRequestInfo* info) {
   // This request as a broken cert, which means its host is broken.
   backend_->MarkHostAsBroken(info->url().host(), info->child_id());
   UpdateStateForMixedContent(info);
 }