[DevTools] Reduce amount of tokens produced by tokenizeFormatString

Source/devtools/front_end/platform/utilities.js

 /*
  * Copyright (C) 2007 Apple Inc.  All rights reserved.
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 941 matching lines @@
  * @param {!Object.<string, function(string, ...):*>} formatters
  * @return {!Array.<!Object>}
  */
 String.tokenizeFormatString = function(format, formatters)
 {
     var tokens = [];
     var substitutionIndex = 0;
 
     function addStringToken(str)
     {
-        tokens.push({ type: "string", value: str });
+        if (tokens.length && tokens[tokens.length - 1].type === "string")
+            tokens[tokens.length - 1].value += str;
+        else
+            tokens.push({ type: "string", value: str });
     }
 
     function addSpecifierToken(specifier, precision, substitutionIndex)
     {
         tokens.push({ type: "specifier", specifier: specifier, precision: precision, substitutionIndex: substitutionIndex });
     }
 
     var index = 0;
     for (var precentIndex = format.indexOf("%", index); precentIndex !== -1; precentIndex = format.indexOf("%", index)) {
         if (format.length === index)  // unescaped % sign at the end of the format string.
@@ skipping 516 matching lines @@
  * @param {T} defaultValue
  * @return {!Promise.<T>}
  * @template T
  */
 Promise.prototype.catchException = function(defaultValue) {
     return this.catch(function (error) {
         console.error(error);
         return defaultValue;
     });
 }