Simplify template literal raw string creation

test/mjsunit/harmony/templates.js

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Flags: --harmony-templates
 
 var num = 5;
 var str = "str";
 function fn() { return "result"; }
 var obj = {
@@ skipping 410 matching lines @@
 
 (function testExtendedArrayPrototype() {
   Object.defineProperty(Array.prototype, 0, {
     set: function() {
       assertUnreachable();
     }
   });
   function tag(){}
   tag`a${1}b`;
 })();
+
+
+(function testRawLineNormalization() {
+  function raw0(callSiteObj) {
+    return callSiteObj.raw[0];
+  }
+  assertEquals(eval("raw0`\r`"), "\n");
+  assertEquals(eval("raw0`\r\n`"), "\n");
+  assertEquals(eval("raw0`\r\r\n`"), "\n\n");
+  assertEquals(eval("raw0`\r\n\r\n`"), "\n\n");
+  assertEquals(eval("raw0`\r\r\r\n`"), "\n\n\n");
+})();