Make using virtual contexts a workaround flag rather than cmdline

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"
 
 namespace switches {
 
 // By default, file:// URIs cannot read other file:// URIs. This is an
 // override for developers who need the old behavior for testing.
@@ skipping 500 matching lines @@
 
 // Enable screen capturing support for MediaStream API.
 const char kEnableUserMediaScreenCapturing[] =
     "enable-usermedia-screen-capturing";
 
 // Enables the use of the viewport meta tag, which allows
 // pages to control aspects of their own layout. This also turns on touch-screen
 // pinch gestures.
 const char kEnableViewport[]                = "enable-viewport";
 
-// Allow GL contexts to be automatically virtualized (shared between command
-// buffer clients) if they are compatible.
-const char kEnableVirtualGLContexts[]       = "enable-virtual-gl-contexts";
-
 // Enables moving cursor by word in visual order.
 const char kEnableVisualWordMovement[]      = "enable-visual-word-movement";
 
 // Enable the Vtune profiler support.
 const char kEnableVtune[]                   = "enable-vtune-support";
 
 // Enable CSS Transitions / Animations on the Web Animations model.
 const char kEnableWebAnimationsCSS[]        = "enable-web-animations-css";
 
 // Enable SVG Animations on the Web Animations model.
@@ skipping 421 matching lines @@
 #endif
 
 #if defined(USE_AURA)
 // Forces usage of the test compositor. Needed to run ui tests on bots.
 extern const char kTestCompositor[]         = "test-compositor";
 #endif
 
 // Don't dump stuff here, follow the same order as the header.
 
 }  // namespace switches