Refactored tokentrees into their own files in preparation for tokenstreams. Modified tests to point to the new file now.

src/libsyntax/util/parser_testing.rs

@@ -14,10 +14,11 @@ use parse::{lexer, new_parser_from_source_str};
 use parse::parser::Parser;
 use parse::token;
 use ptr::P;
+use tokenstream;
 use std::iter::Peekable;
 
 /// Map a string to tts, using a made-up filename:
-pub fn string_to_tts(source_str: String) -> Vec<ast::TokenTree> {
+pub fn string_to_tts(source_str: String) -> Vec<tokenstream::TokenTree> {
     let ps = ParseSess::new();
     filemap_to_tts(&ps, ps.codemap().new_filemap("bogofile".to_string(), None, source_str))
 }