Disable accelerated 2d canvas flag and about:flags entry on 552...

chrome/browser/about_flags.cc

 // Copyright (c) 2010 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 "chrome/browser/about_flags.h"
 
 #include <algorithm>
 #include <iterator>
 #include <map>
 #include <set>
@@ skipping 125 matching lines @@
     switches::kEnableMatchPreview
   },
   {
     "gpu-compositing", // Do not change; see above
     IDS_FLAGS_ACCELERATED_COMPOSITING_NAME,
     IDS_FLAGS_ACCELERATED_COMPOSITING_DESCRIPTION,
     kOsAll,
     switches::kEnableAcceleratedCompositing
   },
   {
-    "gpu-canvas-2d", // Do not change; see above
-    IDS_FLAGS_ACCELERATED_CANVAS_2D_NAME,
-    IDS_FLAGS_ACCELERATED_CANVAS_2D_DESCRIPTION,
-    kOsWin | kOsLinux | kOsCrOS,
-    switches::kEnableAccelerated2dCanvas
-  },
-  {
     "webgl", // Do not change; see above
     IDS_FLAGS_WEBGL_NAME,
     IDS_FLAGS_WEBGL_DESCRIPTION,
     kOsAll,
     switches::kEnableExperimentalWebGL
   }
   //{
   //  "print-preview",  // Do not change; see above
   //  IDS_FLAGS_PRINT_PREVIEW_NAME,
   //  IDS_FLAGS_PRINT_PREVIEW_DESCRIPTION,
@@ skipping 220 matching lines @@
 
 } // namespace
 
 namespace testing {
 void ClearState() {
   FlagsState::instance()->reset();
 }
 }  // namespace testing
 
 }  // namespace about_flags