Rename ParserInfo::function() and CompilationInfo::function() to literal().

src/parser.h

Index: src/parser.h
diff --git a/src/parser.h b/src/parser.h
index 3d907184bce0edf52846d40c7535a166f83d6a08..a0be1dfe7ef4c2e77746f7fe21c9b1315eb361d5 100644
--- a/src/parser.h
+++ b/src/parser.h
@@ -104,9 +104,6 @@ class ParseInfo {
     ast_value_factory_ = ast_value_factory;
   }
 
-  FunctionLiteral* function() {  // TODO(titzer): temporary name adapter
-    return literal_;
-  }
   FunctionLiteral* literal() { return literal_; }
   void set_literal(FunctionLiteral* literal) { literal_ = literal; }