Update the remaining include paths of base/string_piece.h to its new location.

webkit/tools/test_shell/test_shell.h

 // Copyright (c) 2012 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.
 
 #ifndef WEBKIT_TOOLS_TEST_SHELL_TEST_SHELL_H_
 #define WEBKIT_TOOLS_TEST_SHELL_TEST_SHELL_H_
 
 
 #include <list>
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/lazy_instance.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
-#include "base/string_piece.h"
+#include "base/strings/string_piece.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebNavigationPolicy.h"
 #include "ui/gfx/native_widget_types.h"
 #include "webkit/tools/test_shell/webview_host.h"
 #include "webkit/tools/test_shell/webwidget_host.h"
 
 typedef std::list<gfx::NativeWindow> WindowList;
 
 #if defined(OS_WIN)
 namespace ui {
 class ScopedOleInitializer;
@@ skipping 369 matching lines @@
 #if defined(OS_WIN)
     // Used by the watchdog to know when it's finished.
     HANDLE finished_event_;
 #endif
 
     // Dump the stats table counters on exit.
     bool dump_stats_table_on_exit_;
 };
 
 #endif  // WEBKIT_TOOLS_TEST_SHELL_TEST_SHELL_H_