Trace_event upgrades

chrome/browser/resources/gpu_internals/browser_bridge.js

 // Copyright (c) 2011 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.
 
 cr.define('gpu', function() {
   /**
    * This class provides a 'bridge' for communicating between javascript and
    * the browser.
    * @constructor
    */
   function BrowserBridge() {
     // If we are not running inside WebUI, output chrome.send messages
     // to the console to help with quick-iteration debugging.
     if (chrome.send === undefined && console.log) {
+      this.debugMode_ = true;
       chrome.send = function(messageHandler, args) {
         console.log('chrome.send', messageHandler, args);
       };
+    } else {
+      this.debugMode_ = false;
     }
 
     this.nextRequestId_ = 0;
     this.pendingCallbacks_ = [];
   }
 
   BrowserBridge.prototype = {
     __proto__: Object.prototype,
 
     /**
+     * Returns true if the page is hosted inside Chrome WebUI
+     * Helps have behavior conditional to emulate_webui.py
+     */
+    get debugMode() {
+      return this.debugMode_;
+    },
+
+    /**
      * Sends a message to the browser with specified args. The
      * browser will reply asynchronously via the provided callback.
      */
     callAsync: function(submessage, args, callback) {
       var requestId = this.nextRequestId_;
       this.nextRequestId_ += 1;
       this.pendingCallbacks_[requestId] = callback;
       if (!args) {
         chrome.send('callAsync', [requestId.toString(), submessage]);
       } else {
@@ skipping 12 matching lines @@
       var callback = this.pendingCallbacks_[requestId];
       callback(args);
       delete this.pendingCallbacks_[requestId];
     }
   };
 
   return {
     BrowserBridge : BrowserBridge
   };
 });