Add about:flags entry to disable WebGL.

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>
 
 #include "base/command_line.h"
 #include "base/memory/singleton.h"
 #include "base/string_number_conversions.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/prefs/scoped_user_pref_update.h"
 #include "chrome/common/chrome_content_client.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "content/browser/user_metrics.h"
+#include "content/common/content_switches.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/gl/gl_switches.h"
 
 namespace about_flags {
 
 // Macros to simplify specifying the type.
 #define SINGLE_VALUE_TYPE_AND_VALUE(command_line_switch, switch_value) \
     Experiment::SINGLE_VALUE, command_line_switch, switch_value, NULL, 0
 #define SINGLE_VALUE_TYPE(command_line_switch) \
@@ skipping 127 matching lines @@
     kOsAll,
     SINGLE_VALUE_TYPE(switches::kShowFPSCounter)
   },
   {
     "disable-gpu-vsync",
     IDS_FLAGS_DISABLE_GPU_VSYNC_NAME,
     IDS_FLAGS_DISABLE_GPU_VSYNC_DESCRIPTION,
     kOsAll,
     SINGLE_VALUE_TYPE(switches::kDisableGpuVsync)
   },
+  {
+    "disable-webgl",
+    IDS_FLAGS_DISABLE_WEBGL_NAME,
+    IDS_FLAGS_DISABLE_WEBGL_DESCRIPTION,
+    kOsAll,
+    SINGLE_VALUE_TYPE(switches::kDisableExperimentalWebGL)
+  },
   // Exposed on all platforms until there is a workaround for easy access to
   // the native print dialog for users that need it. Once that's done, revert
   // back to:
   // Only expose this for Chromium builds where users may not have the PDF
   // plugin. Do not give Google Chrome users the option to disable it here.
   // Also expose it for Chrome OS where print preview is still experimental.
   {
     "print-preview",  // FLAGS:RECORD_UMA
     IDS_FLAGS_PRINT_PREVIEW_NAME,
     IDS_FLAGS_PRINT_PREVIEW_DESCRIPTION,
@@ skipping 655 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags