Add pref entry for virtual keyboard

chrome/browser/chromeos/input_method/input_method_manager.h

Index: chrome/browser/chromeos/input_method/input_method_manager.h
diff --git a/chrome/browser/chromeos/input_method/input_method_manager.h b/chrome/browser/chromeos/input_method/input_method_manager.h
index 1c0d14badbb9d7ca4e87b7428c8609922f5d7527..37576e4cb6a15b4b83e7a3e42a94e8c59fcbef18 100644
--- a/chrome/browser/chromeos/input_method/input_method_manager.h
+++ b/chrome/browser/chromeos/input_method/input_method_manager.h
@@ -26,7 +26,6 @@ namespace input_method {
 
 class VirtualKeyboard;
 
-
 // This class manages input methodshandles.  Classes can add themselves as
 // observers. Clients can get an instance of this library class by:
 // InputMethodManager::GetInstance().
@@ -170,6 +169,15 @@ class InputMethodManager {
                                        const std::set<std::string>& layouts,
                                        bool is_system) = 0;
 
+  // Sets user preference on virtual keyboard selection.
+  // See virtual_keyboard_selector.h for details.
+  virtual bool SetVirtualKeyboardPreference(const std::string& input_method_id,
+                                            const GURL& extention_url) = 0;
+
+  // Clears all preferences on virtual keyboard selection.
+  // See virtual_keyboard_selector.h for details.
+  virtual void ClearAllVirtualKeyboardPreferences() = 0;
+
   virtual input_method::InputMethodDescriptor previous_input_method() const = 0;
   virtual input_method::InputMethodDescriptor current_input_method() const = 0;