Delete FilesystemInterface::DeleteFolderAndContents and related methods.

webrtc/base/unixfilesystem.h

Index: webrtc/base/unixfilesystem.h
diff --git a/webrtc/base/unixfilesystem.h b/webrtc/base/unixfilesystem.h
index 84202e325079d2be209d131b50a5fa112cc85d3f..6a124ff6b70d4ee555605af953b909d16bcadc0a 100644
--- a/webrtc/base/unixfilesystem.h
+++ b/webrtc/base/unixfilesystem.h
@@ -65,9 +65,6 @@ class UnixFilesystem : public FilesystemInterface {
   // Returns true if a pathname is a directory
   bool IsFolder(const Pathname& pathname) override;
 
-  // Returns true if pathname represents a temporary location on the system.
-  bool IsTemporaryPath(const Pathname& pathname) override;
-
   // Returns true of pathname represents an existing file
   bool IsFile(const Pathname& pathname) override;
 
@@ -89,9 +86,6 @@ class UnixFilesystem : public FilesystemInterface {
                    FileTimeType which,
                    time_t* time) override;
 
-  // Get a temporary folder that is unique to the current user and application.
-  bool GetAppTempFolder(Pathname* path) override;
-
  private:
 #if defined(WEBRTC_ANDROID) || defined(WEBRTC_MAC)
   static char* provided_app_data_folder_;