Guest Mode: input method should default to the underlying latin keyboard layout.

chrome/browser/chromeos/base/locale_util.h

Index: chrome/browser/chromeos/base/locale_util.h
diff --git a/chrome/browser/chromeos/base/locale_util.h b/chrome/browser/chromeos/base/locale_util.h
index e260c2015c31c93941fff83d8b133fcae7a84d92..3ab3950086233b791a1f889fe0b55774a0c52d43 100644
--- a/chrome/browser/chromeos/base/locale_util.h
+++ b/chrome/browser/chromeos/base/locale_util.h
@@ -37,8 +37,10 @@ typedef base::Callback<void(const std::string&, const std::string&, bool)>
 // method currently in use may not be supported by the new locale. (i.e.
 // using new locale with unsupported input method may lead to undefined
 // behavior; use "enableLocaleKeyboardLayouts=false" with caution)
+// Note2: login_layouts_only=true enables only login-capable layouts.
 void SwitchLanguage(const std::string& locale,
-                    bool enableLocaleKeyboardLayouts,
+                    const bool enableLocaleKeyboardLayouts,
+                    const bool login_layouts_only,
                     scoped_ptr<SwitchLanguageCallback> callback);
 
 }  // namespace locale_util