Remove enable-software-compositing command-line flag.

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 519 matching lines @@
 // support. <http://crbug.com/166704>
 const char kEnableSeccompFilterSandbox[] =
     "enable-seccomp-filter-sandbox";
 
 // Enables the Skia benchmarking extension
 const char kEnableSkiaBenchmarking[]        = "enable-skia-benchmarking";
 
 // On platforms that support it, enables smooth scroll animation.
 const char kEnableSmoothScrolling[]         = "enable-smooth-scrolling";
 
-// Allow the compositor to use its software implementation if GL fails.
-const char kEnableSoftwareCompositing[]     = "enable-software-compositing";
-
 // Enable spatial navigation
 const char kEnableSpatialNavigation[]       = "enable-spatial-navigation";
 
 // Enables the synthesis part of the Web Speech API.
 const char kEnableSpeechSynthesis[]         = "enable-speech-synthesis";
 
 // Enables StatsTable, logging statistics to a global named shared memory table.
 const char kEnableStatsTable[]              = "enable-stats-table";
 
 // Experimentally ensures that each renderer process:
@@ skipping 487 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