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

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

 // Copyright 2015 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.
-
 /**
  * @interface
  */
-WebInspector.OutputStream = function()
-{
-};
+WebInspector.OutputStream = function() {};
 
 WebInspector.OutputStream.prototype = {
-    /**
-     * @param {string} data
-     * @param {function(!WebInspector.OutputStream)=} callback
-     */
-    write: function(data, callback) { },
+  /**
+   * @param {string} data
+   * @param {function(!WebInspector.OutputStream)=} callback
+   */
+  write: function(data, callback) {},
 
-    close: function() { }
+  close: function() {}
 };
 
 /**
- * @constructor
  * @implements {WebInspector.OutputStream}
+ * @unrestricted
  */
-WebInspector.StringOutputStream = function()
-{
-    this._data = "";
+WebInspector.StringOutputStream = class {
+  constructor() {
+    this._data = '';
+  }
+
+  /**
+   * @override
+   * @param {string} chunk
+   * @param {function(!WebInspector.OutputStream)=} callback
+   */
+  write(chunk, callback) {
+    this._data += chunk;
+  }
+
+  /**
+   * @override
+   */
+  close() {
+  }
+
+  /**
+   * @return {string}
+   */
+  data() {
+    return this._data;
+  }
 };
-
-WebInspector.StringOutputStream.prototype = {
-    /**
-     * @override
-     * @param {string} chunk
-     * @param {function(!WebInspector.OutputStream)=} callback
-     */
-    write: function(chunk, callback)
-    {
-        this._data += chunk;
-    },
-
-    /**
-     * @override
-     */
-    close: function()
-    {
-    },
-
-    /**
-     * @return {string}
-     */
-    data: function()
-    {
-        return this._data;
-    }
-};