Delete unused Filesystem methods GetAppDataFolder and GetDiskFreeSpace.

webrtc/base/win32filesystem.h

Index: webrtc/base/win32filesystem.h
diff --git a/webrtc/base/win32filesystem.h b/webrtc/base/win32filesystem.h
index e81def314efc62a549ab7bfeb1643d7d04babe53..dd3caed385e0f5996e7291df5fbd546b568671ef 100644
--- a/webrtc/base/win32filesystem.h
+++ b/webrtc/base/win32filesystem.h
@@ -74,13 +74,9 @@ class Win32Filesystem : public FilesystemInterface {
   virtual bool GetTemporaryFolder(Pathname &path, bool create,
                                  const std::string *append);
 
-  virtual bool GetAppDataFolder(Pathname* path, bool per_user);
-
   // Get a temporary folder that is unique to the current user and application.
   virtual bool GetAppTempFolder(Pathname* path);
 
-  virtual bool GetDiskFreeSpace(const Pathname& path, int64_t* free_bytes);
-
  private:
   // Returns the path to the running application.
   bool GetAppPathname(Pathname* path);