Add a command-line flag to disable canvas antialiasing. This will be used to characterize performa…

content/browser/web_contents/web_contents_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/web_contents/web_contents_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
@@ skipping 478 matching lines @@
   prefs.force_compositing_mode =
       command_line.HasSwitch(switches::kForceCompositingMode) &&
       !command_line.HasSwitch(switches::kDisableForceCompositingMode);
   prefs.fixed_position_compositing_enabled =
       command_line.HasSwitch(switches::kEnableCompositingForFixedPosition);
   prefs.accelerated_2d_canvas_enabled =
       GpuProcessHost::gpu_enabled() &&
       !command_line.HasSwitch(switches::kDisableAccelerated2dCanvas);
   prefs.deferred_2d_canvas_enabled =
       !command_line.HasSwitch(switches::kDisableDeferred2dCanvas);
+  prefs.antialiased_2d_canvas_disabled =
+      command_line.HasSwitch(switches::kDisable2dCanvasAntialiasing);
   prefs.accelerated_painting_enabled =
       GpuProcessHost::gpu_enabled() &&
       command_line.HasSwitch(switches::kEnableAcceleratedPainting);
   prefs.accelerated_filters_enabled =
       GpuProcessHost::gpu_enabled() &&
       command_line.HasSwitch(switches::kEnableAcceleratedFilters);
   prefs.accelerated_compositing_for_3d_transforms_enabled =
       prefs.accelerated_compositing_for_animation_enabled =
           !command_line.HasSwitch(switches::kDisableAcceleratedLayers);
   prefs.accelerated_compositing_for_plugins_enabled =
@@ skipping 2880 matching lines @@
 
 BrowserPluginGuest* WebContentsImpl::GetBrowserPluginGuest() {
   return browser_plugin_guest_.get();
 }
 
 BrowserPluginEmbedder* WebContentsImpl::GetBrowserPluginEmbedder() {
   return browser_plugin_embedder_.get();
 }
 
 }  // namespace content