Re-land: content: Avoid duplicating the logic used to determine GPU features.

content/renderer/render_widget.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/renderer/render_widget.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/debug/trace_event_synthetic_delay.h"
@@ skipping 924 matching lines @@
     context_provider = ContextProviderCommandBuffer::Create(
         CreateGraphicsContext3D(attributes),
         "RenderCompositor");
     if (!context_provider.get()) {
       // Cause the compositor to wait and try again.
       return scoped_ptr<cc::OutputSurface>();
     }
   }
 
   uint32 output_surface_id = next_output_surface_id_++;
-  if (command_line.HasSwitch(switches::kEnableDelegatedRenderer) &&
-      !command_line.HasSwitch(switches::kDisableDelegatedRenderer)) {
+  if (command_line.HasSwitch(switches::kEnableDelegatedRenderer)) {
     DCHECK(is_threaded_compositing_enabled_);
     return scoped_ptr<cc::OutputSurface>(
         new DelegatedCompositorOutputSurface(
             routing_id(),
             output_surface_id,
             context_provider));
   }
   if (!context_provider.get()) {
     if (!command_line.HasSwitch(switches::kEnableSoftwareCompositing))
       return scoped_ptr<cc::OutputSurface>();
@@ skipping 1932 matching lines @@
 
 void RenderWidget::RegisterSwappedOutChildFrame(RenderFrameImpl* frame) {
   swapped_out_frames_.AddObserver(frame);
 }
 
 void RenderWidget::UnregisterSwappedOutChildFrame(RenderFrameImpl* frame) {
   swapped_out_frames_.RemoveObserver(frame);
 }
 
 }  // namespace content