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 373 matching lines @@
     kOsAll,
     SINGLE_VALUE_TYPE(switches::kDownloadsNewUI)
   },
   {
     "enable-autologin",
     IDS_FLAGS_ENABLE_AUTOLOGIN_NAME,
     IDS_FLAGS_ENABLE_AUTOLOGIN_DESCRIPTION,
     kOsMac | kOsWin | kOsLinux,
     SINGLE_VALUE_TYPE(switches::kEnableAutologin)
   },
+  {
+    "in-process-webgl",
+    IDS_FLAGS_ENABLE_WEBGL_NAME,
+    IDS_FLAGS_ENABLE_WEBGL_DESCRIPTION,
+    kOsAll,
+    SINGLE_VALUE_TYPE(switches::kInProcessWebGL)

[vangelis, 2011/09/21 21:35:27]

This is the wrong flag.  The one we need in order to disable WebGL is
kDisableExperimentalWebGL.  

What will be a bit confusing with the about:flags UI for this is that the flag
is a disable flag but you'll still need to click on the "Enable" button to
disable WebGL.  But that's the unfortunate side-effect of using about:flags for
such settings...

[tfarina, 2011/09/21 21:42:39]

Done.

+  },
 };
 
 const Experiment* experiments = kExperiments;
 size_t num_experiments = arraysize(kExperiments);
 
 // Stores and encapsulates the little state that about:flags has.
 class FlagsState {
  public:
   FlagsState() : needs_restart_(false) {}
   void ConvertFlagsToSwitches(PrefService* prefs, CommandLine* command_line);
@@ skipping 409 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags