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

rlz/test/rlz_test_helpers.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.
 //
 // Main entry point for all unit tests.
 
 #include "rlz_test_helpers.h"
 
 #include "rlz/lib/rlz_lib.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 57 matching lines @@
 #if defined(OS_POSIX)
   ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
   rlz_lib::testing::SetRlzStoreDirectory(temp_dir_.path());
 #endif  // defined(OS_POSIX)
 }
 
 void RlzLibTestNoMachineState::TearDown() {
 #if defined(OS_WIN)
   UndoOverrideRegistryHives();
 #elif defined(OS_POSIX)
-  rlz_lib::testing::SetRlzStoreDirectory(FilePath());
+  rlz_lib::testing::SetRlzStoreDirectory(base::FilePath());
 #endif  // defined(OS_WIN)
 }
 
 void RlzLibTestBase::SetUp() {
   RlzLibTestNoMachineState::SetUp();
 #if defined(OS_WIN)
   rlz_lib::CreateMachineState();
 #endif  // defined(OS_WIN)
 }