DevTools: reformat front-end code to match chromium style.

third_party/WebKit/Source/devtools/front_end/common/CharacterIdMap.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
-
 /**
- * @constructor
  * @template T
+ * @unrestricted
  */
-WebInspector.CharacterIdMap = function()
-{
+WebInspector.CharacterIdMap = class {
+  constructor() {
     /** @type {!Map<T, string>} */
     this._elementToCharacter = new Map();
     /** @type {!Map<string, T>} */
     this._characterToElement = new Map();
     this._charCode = 33;
+  }
+
+  /**
+   * @param {T} object
+   * @return {string}
+   */
+  toChar(object) {
+    var character = this._elementToCharacter.get(object);
+    if (!character) {
+      if (this._charCode >= 0xFFFF)
+        throw new Error('CharacterIdMap ran out of capacity!');
+      character = String.fromCharCode(this._charCode++);
+      this._elementToCharacter.set(object, character);
+      this._characterToElement.set(character, object);
+    }
+    return character;
+  }
+
+  /**
+   * @param {string} character
+   * @return {?T}
+   */
+  fromChar(character) {
+    return this._characterToElement.get(character) || null;
+  }
 };
-
-WebInspector.CharacterIdMap.prototype = {
-    /**
-     * @param {T} object
-     * @return {string}
-     */
-    toChar: function(object)
-    {
-        var character = this._elementToCharacter.get(object);
-        if (!character) {
-            if (this._charCode >= 0xFFFF)
-                throw new Error("CharacterIdMap ran out of capacity!");
-            character = String.fromCharCode(this._charCode++);
-            this._elementToCharacter.set(object, character);
-            this._characterToElement.set(character, object);
-        }
-        return character;
-    },
-
-    /**
-     * @param {string} character
-     * @return {?T}
-     */
-    fromChar: function(character)
-    {
-        return this._characterToElement.get(character) || null;
-    }
-};