Replace FilePath with base::FilePath in some more top level directories.

ui/aura/test/test_aura_initializer.cc

 // 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.
 
 #include "ui/aura/test/test_aura_initializer.h"
 
 #include "base/base_paths.h"
 #include "base/path_service.h"
 #include "ui/base/resource/resource_bundle.h"
 
 namespace aura {
 namespace test {
 
 TestAuraInitializer::TestAuraInitializer() {
 #if defined(OS_LINUX)
-  FilePath pak_file;
+  base::FilePath pak_file;
   PathService::Get(base::DIR_MODULE, &pak_file);
   pak_file = pak_file.Append(FILE_PATH_LITERAL(
       "aura_test_support_resources.pak"));
   ui::ResourceBundle::InitSharedInstanceWithPakPath(pak_file);
 #endif
 }
 
 TestAuraInitializer::~TestAuraInitializer() {
 #if defined(OS_LINUX)
   ui::ResourceBundle::CleanupSharedInstance();
 #endif
 }
 
 }  // namespace test
 }  // namespace aura