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

content/browser/renderer_host/render_process_host_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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 884 matching lines @@
     switches::kDisableDeadlineScheduling,
     switches::kDisableDelegatedRenderer,
     switches::kDisableDesktopNotifications,
     switches::kDisableDeviceMotion,
     switches::kDisableDeviceOrientation,
     switches::kDisableDirectNPAPIRequests,
     switches::kDisableFileSystem,
     switches::kDisableFiltersOverIPC,
     switches::kDisableFullScreen,
     switches::kDisableGeolocation,
-    switches::kDisableGLMultisampling,
     switches::kDisableGpu,
     switches::kDisableGpuCompositing,
     switches::kDisableGpuVsync,
     switches::kDisableHistogramCustomizer,
     switches::kDisableLocalStorage,
     switches::kDisableLogging,
     switches::kDisablePinch,
     switches::kDisablePrefixedEncryptedMedia,
     switches::kDisableSeccompFilterSandbox,
     switches::kDisableSessionStorage,
@@ skipping 919 matching lines @@
     // Skip widgets in other processes.
     if (widget->GetProcess()->GetID() != GetID())
       continue;
 
     RenderViewHost* rvh = RenderViewHost::From(widget);
     rvh->UpdateWebkitPreferences(rvh->GetWebkitPreferences());
   }
 }
 
 }  // namespace content