Add pref entry for virtual keyboard

chrome/browser/chromeos/input_method/virtual_keyboard_selector.cc

Index: chrome/browser/chromeos/input_method/virtual_keyboard_selector.cc
diff --git a/chrome/browser/chromeos/input_method/virtual_keyboard_selector.cc b/chrome/browser/chromeos/input_method/virtual_keyboard_selector.cc
index 316b217a0f721ad73a1311e565812fe0b877850a..ff5f795ef1e63a29ac91bf6c355d050438ed8e3c 100644
--- a/chrome/browser/chromeos/input_method/virtual_keyboard_selector.cc
+++ b/chrome/browser/chromeos/input_method/virtual_keyboard_selector.cc
@@ -136,6 +136,10 @@ void VirtualKeyboardSelector::RemoveUserPreference(const std::string& layout) {
   user_preference_.erase(layout);
 }
 
+void VirtualKeyboardSelector::ClearUserPreference() {

[bryeung, 2011/08/03 22:15:40]

should probably be ClearUserPreferences or ClearAllUserPreferences to make it
more clear that it is going to get rid of everything

[Yusuke Sato, 2011/08/04 07:34:50]

Done.

+  user_preference_.clear();
+}
+
 const VirtualKeyboard*
 VirtualKeyboardSelector::SelectVirtualKeyboardWithoutPreferences(
     const std::string& layout) {