Remove enable_webvr from build/config, and move it to the buildflag_header system.

chrome/common/url_constants.h

 // 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.
 
 // Contains constants for known URLs and portions thereof.
 
 #ifndef CHROME_COMMON_URL_CONSTANTS_H_
 #define CHROME_COMMON_URL_CONSTANTS_H_
 
 #include <stddef.h>
 
 #include <string>
 #include <vector>
 
 #include "build/build_config.h"
 #include "chrome/common/features.h"
 #include "content/public/common/url_constants.h"
+#include "device/vr/features.h"
 #include "media/media_features.h"
 #include "ppapi/features/features.h"
 #include "printing/features/features.h"
 
 namespace chrome {
 
 // chrome: URLs (including schemes). Should be kept in sync with the
 // components below.
 extern const char kChromeUIAboutURL[];
 extern const char kChromeUIAppsURL[];
@@ skipping 235 matching lines @@
 
 #if defined(OS_ANDROID)
 extern const char kChromeUIContextualSearchPromoHost[];
 extern const char kChromeUIOfflineInternalsURL[];
 extern const char kChromeUIPhysicalWebDiagnosticsHost[];
 extern const char kChromeUIPopularSitesInternalsHost[];
 extern const char kChromeUISnippetsInternalsHost[];
 extern const char kChromeUIWebApksHost[];
 #endif
 
-#if defined(ENABLE_WEBVR)
+#if BUILDFLAG(ENABLE_WEBVR)
 extern const char kChromeUIVrShellUIHost[];
 #endif
 
 #if defined(OS_CHROMEOS)
 extern const char kChromeUIActivationMessageHost[];
 extern const char kChromeUIAppLaunchHost[];
 extern const char kChromeUIBluetoothPairingHost[];
 extern const char kChromeUICertificateManagerHost[];
 extern const char kChromeUIChooseMobileNetworkHost[];
 extern const char kChromeUICryptohomeHost[];
@@ skipping 334 matching lines @@
 extern const char kChooserUsbOverviewURL[];
 
 #if defined(OS_CHROMEOS)
 // The URL for EOL notification
 extern const char kEolNotificationURL[];
 #endif
 
 }  // namespace chrome
 
 #endif  // CHROME_COMMON_URL_CONSTANTS_H_