Move AppendFile and *CurrentDirectory to the base namespace.

base/file_util.h

Index: base/file_util.h
diff --git a/base/file_util.h b/base/file_util.h
index 32dce3b1a5ee0d93a83a930b8891b0f3a6a613f0..3c171f181d5d060a45cde51e56d7a6612b43e2bf 100644
--- a/base/file_util.h
+++ b/base/file_util.h
@@ -338,22 +338,22 @@ BASE_EXPORT int WriteFile(const FilePath& filename, const char* data,
 BASE_EXPORT int WriteFileDescriptor(const int fd, const char* data, int size);
 #endif
 
-}  // namespace base
-
-// -----------------------------------------------------------------------------
-
-namespace file_util {
-
 // Append the given buffer into the file. Returns the number of bytes written,
 // or -1 on error.
-BASE_EXPORT int AppendToFile(const base::FilePath& filename,
+BASE_EXPORT int AppendToFile(const FilePath& filename,
                              const char* data, int size);
 
 // Gets the current working directory for the process.
-BASE_EXPORT bool GetCurrentDirectory(base::FilePath* path);
+BASE_EXPORT bool GetCurrentDirectory(FilePath* path);
 
 // Sets the current working directory for the process.
-BASE_EXPORT bool SetCurrentDirectory(const base::FilePath& path);
+BASE_EXPORT bool SetCurrentDirectory(const FilePath& path);
+
+}  // namespace base
+
+// -----------------------------------------------------------------------------
+
+namespace file_util {
 
 // Attempts to find a number that can be appended to the |path| to make it
 // unique. If |path| does not exist, 0 is returned.  If it fails to find such