Add FilePath to base namespace.

base/file_path.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.
 
 // FilePath is a container for pathnames stored in a platform's native string
 // type, providing containers for manipulation in according with the
 // platform's conventions for pathnames.  It supports the following path
 // types:
 //
 //                   POSIX            Windows
@@ skipping 107 matching lines @@
 // here so that the same setting can be used in both the implementation and
 // in the unit test.
 #if defined(OS_WIN)
 #define FILE_PATH_USES_DRIVE_LETTERS
 #define FILE_PATH_USES_WIN_SEPARATORS
 #endif  // OS_WIN
 
 class Pickle;
 class PickleIterator;
 
+namespace base {
+
 // An abstraction to isolate users from the differences between native
 // pathnames on different platforms.
 class BASE_EXPORT FilePath {
  public:
 #if defined(OS_POSIX)
   // On most platforms, native pathnames are char arrays, and the encoding
   // may or may not be specified.  On Mac OS X, native pathnames are encoded
   // in UTF-8.
   typedef std::string StringType;
 #elif defined(OS_WIN)
@@ skipping 253 matching lines @@
   // Remove trailing separators from this object.  If the path is absolute, it
   // will never be stripped any more than to refer to the absolute root
   // directory, so "////" will become "/", not "".  A leading pair of
   // separators is never stripped, to support alternate roots.  This is used to
   // support UNC paths on Windows.
   void StripTrailingSeparatorsInternal();
 
   StringType path_;
 };
 
+}  // namespace base
+
+// TODO(brettw) remove this once callers properly use the base namespace.
+using base::FilePath;
+
 // This is required by googletest to print a readable output on test failures.
-BASE_EXPORT extern void PrintTo(const FilePath& path, std::ostream* out);
+BASE_EXPORT extern void PrintTo(const base::FilePath& path, std::ostream* out);
 
 // Macros for string literal initialization of FilePath::CharType[], and for
 // using a FilePath::CharType[] in a printf-style format string.
 #if defined(OS_POSIX)
 #define FILE_PATH_LITERAL(x) x
 #define PRFilePath "s"
 #define PRFilePathLiteral "%s"
 #elif defined(OS_WIN)
 #define FILE_PATH_LITERAL(x) L ## x
 #define PRFilePath "ls"
 #define PRFilePathLiteral L"%ls"
 #endif  // OS_WIN
 
 // Provide a hash function so that hash_sets and maps can contain FilePath
 // objects.
 namespace BASE_HASH_NAMESPACE {
 #if defined(COMPILER_GCC)
 
 template<>
-struct hash<FilePath> {
-  size_t operator()(const FilePath& f) const {
-    return hash<FilePath::StringType>()(f.value());
+struct hash<base::FilePath> {
+  size_t operator()(const base::FilePath& f) const {
+    return hash<base::FilePath::StringType>()(f.value());
   }
 };
 
 #elif defined(COMPILER_MSVC)
 
-inline size_t hash_value(const FilePath& f) {
+inline size_t hash_value(const base::FilePath& f) {
   return hash_value(f.value());
 }
 
 #endif  // COMPILER
 
 }  // namespace BASE_HASH_NAMESPACE
 
 #endif  // BASE_FILE_PATH_H_