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

webkit/glue/webpreferences.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 "webkit/glue/webpreferences.h"
 
 #include "base/basictypes.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebNetworkStateNotifier.h"
@@ skipping 79 matching lines @@
       asynchronous_spell_checking_enabled(true),
       unified_textchecker_enabled(false),
       accelerated_compositing_enabled(false),
       force_compositing_mode(false),
       fixed_position_compositing_enabled(false),
       accelerated_compositing_for_3d_transforms_enabled(false),
       accelerated_compositing_for_animation_enabled(false),
       accelerated_compositing_for_video_enabled(false),
       accelerated_2d_canvas_enabled(false),
       deferred_2d_canvas_enabled(false),
+      antialiased_2d_canvas_disabled(false),
       accelerated_painting_enabled(false),
       accelerated_filters_enabled(false),
       gesture_tap_highlight_enabled(false),
       accelerated_compositing_for_plugins_enabled(false),
       memory_info_enabled(false),
       fullscreen_enabled(false),
       allow_displaying_insecure_content(true),
       allow_running_insecure_content(false),
       password_echo_enabled(false),
       should_print_backgrounds(false),
@@ skipping 271 matching lines @@
   // on the command line.
   settings->setAcceleratedCompositingForFixedPositionEnabled(
       fixed_position_compositing_enabled);
 
   // Enable gpu-accelerated 2d canvas if requested on the command line.
   settings->setAccelerated2dCanvasEnabled(accelerated_2d_canvas_enabled);
 
   // Enable deferred 2d canvas if requested on the command line.
   settings->setDeferred2dCanvasEnabled(deferred_2d_canvas_enabled);
 
+  // Disable antialiasing for 2d canvas if requested on the command line.
+  settings->setAntialiased2dCanvasEnabled(!antialiased_2d_canvas_disabled);
+
   // Enable gpu-accelerated painting if requested on the command line.
   settings->setAcceleratedPaintingEnabled(accelerated_painting_enabled);
 
   // Enable gpu-accelerated filters if requested on the command line.
   settings->setAcceleratedFiltersEnabled(accelerated_filters_enabled);
 
   // Enable gesture tap highlight if requested on the command line.
   settings->setGestureTapHighlightEnabled(gesture_tap_highlight_enabled);
 
   // Enabling accelerated layers from the command line enabled accelerated
@@ skipping 85 matching lines @@
         mismatching_enums)
 
 COMPILE_ASSERT_MATCHING_ENUMS(
     WebPreferences::EDITING_BEHAVIOR_MAC, WebSettings::EditingBehaviorMac);
 COMPILE_ASSERT_MATCHING_ENUMS(
     WebPreferences::EDITING_BEHAVIOR_WIN, WebSettings::EditingBehaviorWin);
 COMPILE_ASSERT_MATCHING_ENUMS(
     WebPreferences::EDITING_BEHAVIOR_UNIX, WebSettings::EditingBehaviorUnix);
 
 }  // namespace webkit_glue