Replace FilePath with base::FilePath.

base/file_path_unittest.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 "base/basictypes.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/utf_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
 // This macro helps avoid wrapped lines in the test structs.
 #define FPL(x) FILE_PATH_LITERAL(x)
 
 // This macro constructs strings which can contain NULs.
 #define FPS(x) FilePath::StringType(FPL(x), arraysize(FPL(x)) - 1)
 
+namespace base {
+
 struct UnaryTestData {
   const FilePath::CharType* input;
   const FilePath::CharType* expected;
 };
 
 struct UnaryBooleanTestData {
   const FilePath::CharType* input;
   bool expected;
 };
 
@@ skipping 1161 matching lines @@
   };
   for (size_t i = 0; i < arraysize(cases); ++i) {
     FilePath input(cases[i].input);
     FilePath observed = input.NormalizePathSeparators();
     EXPECT_EQ(FilePath::StringType(cases[i].expected), observed.value()) <<
               "i: " << i << ", input: " << input.value();
   }
 }
 
 #endif
+
+}  // namespace base