Show GpuMemoryBuffer feature in chrome://gpu

content/browser/resources/gpu/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. When run outside of WebUI, e.g. as a regular webpage, it provides
    * synthetic data to assist in testing.
    * @constructor
    */
@@ skipping 18 matching lines @@
       this.beginRequestLogMessages_();
     }
   }
 
   BrowserBridge.prototype = {
     __proto__: cr.EventTarget.prototype,
 
     applySimulatedData_: function applySimulatedData(data) {
       // set up things according to the simulated data
       this.gpuInfo_ = data.gpuInfo;
+      this.gmbInfo_ = data.gmbInfo;
       this.clientInfo_ = data.clientInfo;
       this.logMessages_ = data.logMessages;
       cr.dispatchSimpleEvent(this, 'gpuInfoUpdate');
+      cr.dispatchSimpleEvent(this, 'gmbInfoUpdate');

[reveman, 2015/10/27 23:20:36]

gmb -> gpu_memory_buffer

       cr.dispatchSimpleEvent(this, 'clientInfoChange');
       cr.dispatchSimpleEvent(this, 'logMessagesChange');
     },
 
     /**
      * Returns true if the page is hosted inside Chrome WebUI
      * Helps have behavior conditional to emulate_webui.py
      */
     get debugMode() {
       return this.debugMode_;
@@ skipping 36 matching lines @@
 
     /**
      * Called from gpu c++ code when GPU Info is updated.
      */
     onGpuInfoUpdate: function(gpuInfo) {
       this.gpuInfo_ = gpuInfo;
       cr.dispatchSimpleEvent(this, 'gpuInfoUpdate');
     },
 
     /**
+     * Get gmbInfo data.
+     */
+    get gmbInfo() {
+      return this.gmbInfo_;
+    },
+
+    /**
+     * Called from gpu c++ code when GpuMemoryBuffer Info is updated.
+     */
+    onGmbInfoUpdate: function(gmbInfo) {
+      this.gmbInfo_ = gmbInfo;
+      cr.dispatchSimpleEvent(this, 'gmbInfoUpdate');
+    },
+
+    /**
      * This function begins a request for the ClientInfo. If it comes back
      * as undefined, then we will issue the request again in 250ms.
      */
     beginRequestClientInfo_: function() {
       this.callAsync('requestClientInfo', undefined, (function(data) {
         if (data === undefined) { // try again in 250 ms
           window.setTimeout(this.beginRequestClientInfo_.bind(this), 250);
         } else {
           this.clientInfo_ = data;
           cr.dispatchSimpleEvent(this, 'clientInfoChange');
@@ skipping 30 matching lines @@
     get logMessages() {
       return this.logMessages_;
     },
 
   };
 
   return {
     BrowserBridge: BrowserBridge
   };
 });