Adding learn more link in chrome://settings for a11y features

chrome/browser/ui/webui/options/browser_options_handler.cc

Index: chrome/browser/ui/webui/options/browser_options_handler.cc
diff --git a/chrome/browser/ui/webui/options/browser_options_handler.cc b/chrome/browser/ui/webui/options/browser_options_handler.cc
index ed62d1fdde9f31b6c5838a75c24cc829d7e65ad3..4b3227f14096ae20aeeaa86264a81cde2ae141e5 100644
--- a/chrome/browser/ui/webui/options/browser_options_handler.cc
+++ b/chrome/browser/ui/webui/options/browser_options_handler.cc
@@ -280,6 +280,8 @@ void BrowserOptionsHandler::GetLocalizedValues(DictionaryValue* values) {
     { "themesReset", IDS_THEMES_RESET_BUTTON },
 #endif
 #if defined(OS_CHROMEOS)
+    { "accessibilityExplanation",
+      IDS_OPTIONS_SETTINGS_ACCESSIBILITY_EXPLANATION },
     { "accessibilityHighContrast",
       IDS_OPTIONS_SETTINGS_ACCESSIBILITY_HIGH_CONTRAST_DESCRIPTION },
     { "accessibilityScreenMagnifier",
@@ -412,6 +414,9 @@ void BrowserOptionsHandler::GetLocalizedValues(DictionaryValue* values) {
   // TODO(pastarmovj): replace this with a call to the CrosSettings list
   // handling functionality to come.
   values->Set("timezoneList", GetTimezoneList().release());
+
+  values->SetString("accessibilityLearnMoreURL",
+                    chrome::kChromeAccessibilityHelpURL);
 #endif
 #if defined(OS_MACOSX)
   values->SetString("macPasswordsWarning",