Add FilePath::FromUTF8Unsafe() and FilePath::AsUTF8Unsafe().

base/file_path.h

Index: base/file_path.h
diff --git a/base/file_path.h b/base/file_path.h
index 639683356eea970980cdc65cd1438b944289795b..a6708e6a22afbe9737d0089e052e0e0345e1e384 100644
--- a/base/file_path.h
+++ b/base/file_path.h
@@ -294,6 +294,9 @@ class BASE_EXPORT FilePath {
   // known-ASCII filename.
   std::string MaybeAsASCII() const;
 
+  // Return the path as UTF-8.
+  std::string AsUTF8() const;
+
   // Older Chromium code assumes that paths are always wstrings.
   // This function converts wstrings to FilePaths, and is
   // useful to smooth porting that old code to the FilePath API.
@@ -312,6 +315,9 @@ class BASE_EXPORT FilePath {
   //   ever use the result of that again as a path.
   static FilePath FromWStringHack(const std::wstring& wstring);
 
+  // Returns a FilePath object from a path name in UTF-8.
+  static FilePath FromUTF8(const std::string& utf8);
+
   void WriteToPickle(Pickle* pickle);
   bool ReadFromPickle(Pickle* pickle, void** iter);