Add a user pref in Settings to disable all GPU features.

content/browser/gpu/gpu_data_manager_impl.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/browser/gpu/gpu_data_manager_impl.h"
 
 #if defined(OS_MACOSX)
 #include <ApplicationServices/ApplicationServices.h>
 #endif  // OS_MACOSX
 
@@ skipping 478 matching lines @@
   }
 #endif
 }
 
 GpuSwitchingOption GpuDataManagerImpl::GetGpuSwitchingOption() const {
   if (!ui::GpuSwitchingManager::GetInstance()->SupportsDualGpus())
     return GPU_SWITCHING_OPTION_UNKNOWN;
   return gpu_switching_;
 }
 
-void GpuDataManagerImpl::BlacklistCard() {
+void GpuDataManagerImpl::DisableHardwareAcceleration() {
   card_blacklisted_ = true;
 
   blacklisted_features_ = GPU_FEATURE_TYPE_ALL;
 
   EnableSoftwareRenderingIfNecessary();
   NotifyGpuInfoUpdate();
 }
 
 std::string GpuDataManagerImpl::GetBlacklistVersion() const {
   if (gpu_blacklist_.get())
@@ skipping 91 matching lines @@
       card_blacklisted_(false),
       update_histograms_(true),
       window_count_(0),
       domain_blocking_enabled_(true) {
   CommandLine* command_line = CommandLine::ForCurrentProcess();
   if (command_line->HasSwitch(switches::kDisableAcceleratedCompositing)) {
     command_line->AppendSwitch(switches::kDisableAccelerated2dCanvas);
     command_line->AppendSwitch(switches::kDisableAcceleratedLayers);
   }
   if (command_line->HasSwitch(switches::kDisableGpu))
-    BlacklistCard();
+    DisableHardwareAcceleration();
   if (command_line->HasSwitch(switches::kGpuSwitching)) {
     std::string option_string = command_line->GetSwitchValueASCII(
         switches::kGpuSwitching);
     GpuSwitchingOption option = StringToGpuSwitchingOption(option_string);
     if (option != GPU_SWITCHING_OPTION_UNKNOWN)
       gpu_switching_ = option;
   }
 
 #if defined(OS_MACOSX)
   CGDisplayRegisterReconfigurationCallback(DisplayReconfigCallback, this);
@@ skipping 184 matching lines @@
 
 void GpuDataManagerImpl::Notify3DAPIBlocked(const GURL& url,
                                             int render_process_id,
                                             int render_view_id,
                                             ThreeDAPIType requester) {
   observer_list_->Notify(&GpuDataManagerObserver::DidBlock3DAPIs,
                          url, render_process_id, render_view_id, requester);
 }
 
 }  // namespace content