Enable ChromeVox on the OOBE screens when using the keyboard shortcut.

chrome/browser/chromeos/login/wizard_accessibility_helper.cc

Index: chrome/browser/chromeos/login/wizard_accessibility_helper.cc
diff --git a/chrome/browser/chromeos/login/wizard_accessibility_helper.cc b/chrome/browser/chromeos/login/wizard_accessibility_helper.cc
index 1731a6749732a11082af592aa4c547a6e269410c..83533230842f6307b663e9d349065fa7acc9d23e 100644
--- a/chrome/browser/chromeos/login/wizard_accessibility_helper.cc
+++ b/chrome/browser/chromeos/login/wizard_accessibility_helper.cc
@@ -7,6 +7,7 @@
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "chrome/browser/browser_process.h"
+#include "chrome/browser/chromeos/accessibility_util.h"
 #include "chrome/browser/extensions/extension_accessibility_api.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
@@ -110,13 +111,7 @@ void WizardAccessibilityHelper::ToggleAccessibility() {
 
 void WizardAccessibilityHelper::SetAccessibilityEnabled(bool enabled) {
   bool doSpeak = (IsAccessibilityEnabled() != enabled);
-  if (g_browser_process) {
-    PrefService* prefService = g_browser_process->local_state();
-    prefService->SetBoolean(prefs::kAccessibilityEnabled, enabled);
-    prefService->ScheduleSavePersistentPrefs();

[dmazzoni, 2011/08/10 05:12:02]

Hey, I noticed that accessibility_util.cc doesn't ever call
ScheduleSavePersistentPrefs - perhaps you should add it there - maybe that
explains why there were circumstances where the pref didn't persist?

-  }
-  ExtensionAccessibilityEventRouter::GetInstance()->
-      SetAccessibilityEnabled(enabled);
+  accessibility::EnableAccessibility(enabled, NULL);
   if (doSpeak) {
     accessibility_handler_->Speak(enabled ?
         l10n_util::GetStringUTF8(IDS_CHROMEOS_ACC_ACCESS_ENABLED).c_str() :