Introduce --vr-shell flag on Android

chrome/common/chrome_switches.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/common/chrome_switches.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "build/build_config.h"
 
@@ skipping 301 matching lines @@
 // disable that check. This switch is used during automated testing.
 const char kDisablePromptOnRepost[]         = "disable-prompt-on-repost";
 
 // Disables using bubbles for session restore request.
 const char kDisableSessionCrashedBubble[] = "disable-session-crashed-bubble";
 
 // Disables the Site Engagement service, which records interaction with sites
 // and allocates certain resources accordingly.
 const char kDisableSiteEngagementService[] = "disable-site-engagement-service";
 
+#if defined(OS_ANDROID)
+// Disable VR UI if supported.
+const char kDisableVrShell[] = "disable-vr-shell";
+#endif
+
 // Disables Web Notification custom layouts.
 const char kDisableWebNotificationCustomLayouts[] =
     "disable-web-notification-custom-layouts";
 
 // Disables WebUSB's CORS-like checks for origin->device communication.
 const char kDisableWebUsbSecurity[] = "disable-webusb-security";
 
 // Some tests seem to require the application to close when the last
 // browser window is closed. Thus, we need a switch to force this behavior
 // for ChromeOS Aura, disable "zero window mode".
@@ skipping 200 matching lines @@
 const char kEnableTabAudioMuting[]  = "enable-tab-audio-muting";
 
 // Enables fanciful thumbnail processing. Used with NTP for
 // instant-extended-api, where thumbnails are generally smaller.
 const char kEnableThumbnailRetargeting[]   = "enable-thumbnail-retargeting";
 
 // Enables Alternate-Protocol when the port is user controlled (> 1024).
 const char kEnableUserAlternateProtocolPorts[] =
     "enable-user-controlled-alternate-protocol-ports";
 
+#if defined(OS_ANDROID)
+// Enable VR UI if supported.
+const char kEnableVrShell[] = "enable-vr-shell";
+#endif
+
 // Enables a new "web app" style frame for hosted apps (including bookmark
 // apps).
 const char kEnableWebAppFrame[] = "enable-web-app-frame";
 
 #if defined(OS_ANDROID)
 // Enables "Add to Home screen" in the app menu to generate WebAPKs.
 const char kEnableWebApk[] = "enable-webapk";
 #endif
 
 // Enables Web Notification custom layouts.
@@ skipping 768 matching lines @@
 
 // -----------------------------------------------------------------------------
 // DO NOT ADD YOUR CRAP TO THE BOTTOM OF THIS FILE.
 //
 // You were going to just dump your switches here, weren't you? Instead, please
 // put them in alphabetical order above, or in order inside the appropriate
 // ifdef at the bottom. The order should match the header.
 // -----------------------------------------------------------------------------
 
 }  // namespace switches