Add menu mode plumbing for WebVR mode.

chrome/browser/resources/vr_shell/vr_shell_ui.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.
 
 var vrShellUi = (function() {
   'use strict';
 
   let ui = new scene.Scene();
   let uiManager;
   let nativeCommandHandler;
@@ skipping 83 matching lines @@
       } else {
         // TODO(mthiesse): Restore the webVR resolution (which matches native
         // display resolution).
       }
     }
 
     setMenuMode(enabled) {
       if (this.menuMode == enabled)
         return;
       this.menuMode = enabled;
-      this.updateState()
+      this.updateState();
     }
 
     setFullscreen(enabled) {
       if (this.fullscreen == enabled)
         return;
       this.fullscreen = enabled;
-      this.updateState()
+      this.updateState();
     }
 
     updateState() {
       // Defaults content quad parameters.
       let y = 0;
       let distance = this.BROWSING_SCREEN_DISTANCE;
       let height = this.SCREEN_HEIGHT;
 
       // Mode-specific overrides.
       if (this.menuMode) {
@@ skipping 1016 matching lines @@
     }
 
     updateState() {
       /** @const */ var URL_INDICATOR_VISIBILITY_TIMEOUT_MS = 5000;
 
       let mode = this.mode;
       let menuMode = this.menuMode;
       let fullscreen = this.fullscreen;
 
       api.doAction(api.Action.SET_CONTENT_PAUSED, {'paused': menuMode});
+      ui.setWebVrRenderingEnabled(mode == api.Mode.WEB_VR && !menuMode);
 
-      this.contentQuad.setEnabled(mode == api.Mode.STANDARD);
+      this.contentQuad.setEnabled(mode == api.Mode.STANDARD || menuMode);
       this.contentQuad.setFullscreen(fullscreen);
       this.contentQuad.setMenuMode(menuMode);
       // TODO(crbug/643815): Set aspect ratio on content quad when available.
       this.controls.setEnabled(menuMode);
       this.controls.setBackButtonEnabled(this.canGoBack || this.fullscreen);
       let enabledIndicators = {}
       enabledIndicators[api.Direction.LEFT] = this.canGoBack || this.fullscreen;
       this.gestureHandlers.setEnabled(enabledIndicators);
       this.omnibox.setEnabled(menuMode);
       this.urlIndicator.setEnabled(mode == api.Mode.STANDARD && !menuMode);
       this.urlIndicator.setVisibilityTimeout(
           URL_INDICATOR_VISIBILITY_TIMEOUT_MS);
       this.secureOriginWarnings.setEnabled(
           mode == api.Mode.WEB_VR && !menuMode);
       this.background.setState(mode, menuMode, fullscreen);
-      this.tabContainer.setEnabled(mode == api.Mode.STANDARD && menuMode);
+      this.tabContainer.setEnabled(menuMode);
 
       this.reloadUiButton.setEnabled(mode == api.Mode.STANDARD);
       this.keyboard.setEnabled(mode == api.Mode.STANDARD && menuMode);
 
+
       api.setUiCssSize(
           uiRootElement.clientWidth, uiRootElement.clientHeight, UI_DPR);
     }
 
     setSecurityLevel(level) {
       this.urlIndicator.setSecurityLevel(level);
     }
 
     setWebVRSecureOrigin(secure) {
       this.secureOriginWarnings.setSecure(secure);
@@ skipping 104 matching lines @@
     nativeCommandHandler.handleCommand(dict);
   }
 
   return {
     initialize: initialize,
     command: command,
   };
 })();
 
 window.addEventListener('load', vrShellUi.initialize);