Add FilePath::{As,From}UTF16Unsafe

base/files/file_path.h

Index: base/files/file_path.h
diff --git a/base/files/file_path.h b/base/files/file_path.h
index 0fb2285b690d4edb2fda412c61a13a89c954dc54..8b69ea493a141672aecfe72afec2486b047dcae4 100644
--- a/base/files/file_path.h
+++ b/base/files/file_path.h
@@ -329,6 +329,9 @@ class BASE_EXPORT FilePath {
   // with "Unsafe" in the function name.
   std::string AsUTF8Unsafe() const;
 
+  // Similar to AsUTF8Unsafe, but returns UTF-16 instead.
+  string16 AsUTF16Unsafe() 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.
@@ -357,6 +360,9 @@ class BASE_EXPORT FilePath {
   // AsUTF8Unsafe() for details.
   static FilePath FromUTF8Unsafe(const std::string& utf8);
 
+  // Similar to FromUTF8Unsafe, but accepts UTF-16 instead.
+  static FilePath FromUTF16Unsafe(const string16& utf16);
+
   void WriteToPickle(Pickle* pickle) const;
   bool ReadFromPickle(PickleIterator* iter);