cc: Remove legacy accelerated painting path

content/renderer/gpu/render_widget_compositor.cc

 // Copyright (c) 2013 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/renderer/gpu/render_widget_compositor.h"
 
 #include <limits>
 #include <string>
 
 #include "base/command_line.h"
@@ skipping 74 matching lines @@
       new RenderWidgetCompositor(widget));
 
   CommandLine* cmd = CommandLine::ForCurrentProcess();
 
   cc::LayerTreeSettings settings;
 
   // For web contents, layer transforms should scale up the contents of layers
   // to keep content always crisp when possible.
   settings.layer_transforms_should_scale_layer_contents = true;
 
-  settings.accelerate_painting =
-      cmd->HasSwitch(switches::kEnableAcceleratedPainting);
   settings.throttle_frame_production =
       !cmd->HasSwitch(switches::kDisableGpuVsync);
   settings.render_parent_drives_begin_frame_ =
       cmd->HasSwitch(switches::kEnableVsyncNotification);
   settings.using_synchronous_renderer_compositor =
       widget->UsingSynchronousRendererCompositor();
   settings.per_tile_painting_enabled =
       cmd->HasSwitch(cc::switches::kEnablePerTilePainting);
   settings.accelerated_animation_enabled =
       !cmd->HasSwitch(cc::switches::kDisableThreadedAnimation);
@@ skipping 466 matching lines @@
   return RenderThreadImpl::current()->OffscreenContextProviderForMainThread();
 }
 
 scoped_refptr<cc::ContextProvider>
 RenderWidgetCompositor::OffscreenContextProviderForCompositorThread() {
   return RenderThreadImpl::current()->
       OffscreenContextProviderForCompositorThread();
 }
 
 }  // namespace content