Added about:flags entries for --enable-accelerated-drawing flag.

chrome/browser/about_flags.cc

 // Copyright (c) 2011 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 137 matching lines @@
     SINGLE_VALUE_TYPE(switches::kForceCompositingMode)
   },
   {
     "composited-layer-borders",
     IDS_FLAGS_COMPOSITED_LAYER_BORDERS,
     IDS_FLAGS_COMPOSITED_LAYER_BORDERS_DESCRIPTION,
     kOsAll,
     SINGLE_VALUE_TYPE(switches::kShowCompositedLayerBorders)
   },
   {
+    "accelerated-drawing",
+    IDS_FLAGS_ACCELERATED_DRAWING_NAME,
+    IDS_FLAGS_ACCELERATED_DRAWING_DESCRIPTION,
+    kOsWin | kOsLinux | kOsCrOS,  // Not available on Mac until it uses Skia.
+    SINGLE_VALUE_TYPE(switches::kEnableAcceleratedDrawing)
+  },
+  {
     "show-fps-counter",
     IDS_FLAGS_SHOW_FPS_COUNTER,
     IDS_FLAGS_SHOW_FPS_COUNTER_DESCRIPTION,
     kOsAll,
     SINGLE_VALUE_TYPE(switches::kShowFPSCounter)
   },
   {
     "disable-gpu-vsync",
     IDS_FLAGS_DISABLE_GPU_VSYNC_NAME,
     IDS_FLAGS_DISABLE_GPU_VSYNC_DESCRIPTION,
@@ skipping 601 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags