Don't send the renderer flags that it doesn't use.

content/browser/gpu/gpu_data_manager_impl_private.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/browser/gpu/gpu_data_manager_impl_private.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 616 matching lines @@
   GpuDataManagerImpl::UnlockedSession session(owner_);
   observer_list_->Notify(&GpuDataManagerObserver::OnVideoMemoryUsageStatsUpdate,
                          video_memory_usage_stats);
 }
 
 void GpuDataManagerImplPrivate::AppendRendererCommandLine(
     CommandLine* command_line) const {
   DCHECK(command_line);
 
   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_WEBGL)) {
-    if (!command_line->HasSwitch(switches::kDisableExperimentalWebGL))
-      command_line->AppendSwitch(switches::kDisableExperimentalWebGL);
     if (!command_line->HasSwitch(switches::kDisablePepper3d))
       command_line->AppendSwitch(switches::kDisablePepper3d);
   }
-  if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_MULTISAMPLING) &&
-      !command_line->HasSwitch(switches::kDisableGLMultisampling))
-    command_line->AppendSwitch(switches::kDisableGLMultisampling);
   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_COMPOSITING) &&
       !command_line->HasSwitch(switches::kDisableAcceleratedCompositing))
     command_line->AppendSwitch(switches::kDisableAcceleratedCompositing);
-  if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_2D_CANVAS) &&
-      !command_line->HasSwitch(switches::kDisableAccelerated2dCanvas))
-    command_line->AppendSwitch(switches::kDisableAccelerated2dCanvas);
   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_VIDEO_DECODE) &&
       !command_line->HasSwitch(switches::kDisableAcceleratedVideoDecode))
     command_line->AppendSwitch(switches::kDisableAcceleratedVideoDecode);
 
   if (use_software_compositor_ &&
       !command_line->HasSwitch(switches::kEnableSoftwareCompositing))
     command_line->AppendSwitch(switches::kEnableSoftwareCompositing);
 
 #if defined(USE_AURA)
   if (!CanUseGpuBrowserCompositor()) {
@@ skipping 549 matching lines @@
 
 void GpuDataManagerImplPrivate::OnGpuProcessInitFailure() {
   gpu_process_accessible_ = false;
   gpu_info_.finalized = true;
   complete_gpu_info_already_requested_ = true;
   // Some observers might be waiting.
   NotifyGpuInfoUpdate();
 }
 
 }  // namespace content