Delete "Experimental WebSocket" flag from chrome://flags.

content/public/common/content_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 "content/public/common/content_switches.h"
 
 #include "base/command_line.h"
 
 namespace switches {
 
@@ skipping 402 matching lines @@
 const char kEnableEncryptedMedia[] = "enable-encrypted-media";
 
 // Enable experimental canvas features, e.g. canvas 2D context attributes
 const char kEnableExperimentalCanvasFeatures[] =
     "enable-experimental-canvas-features";
 
 // Enables Web Platform features that are in development.
 const char kEnableExperimentalWebPlatformFeatures[] =
     "enable-experimental-web-platform-features";
 
-// Enable an experimental WebSocket implementation.
-const char kEnableExperimentalWebSocket[]   = "enable-experimental-websocket";
-
 // By default, cookies are not allowed on file://. They are needed for testing,
 // for example page cycler and layout tests. See bug 1157243.
 const char kEnableFileCookies[]             = "enable-file-cookies";
 
 // Enable the fast text autosizing implementation.
 const char kEnableFastTextAutosizing[]      = "enable-fast-text-autosizing";
 
 const char kEnableFixedPositionCreatesStackingContext[]
     = "enable-fixed-position-creates-stacking-context";
 
@@ skipping 603 matching lines @@
 
 // Disables support for Core Animation plugins. This is triggered when
 // accelerated compositing is disabled. See http://crbug.com/122430 .
 const char kDisableCoreAnimationPlugins[] =
     "disable-core-animation-plugins";
 #endif
 
 // Don't dump stuff here, follow the same order as the header.
 
 }  // namespace switches