Add pref entry for virtual keyboard

chrome/browser/chromeos/input_method/input_method_manager.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // TODO(satorux): Move this from 'cros' directory to 'input_method'
 // directory.
 
 #ifndef CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_MANAGER_H_
 #define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_MANAGER_H_
 #pragma once
 
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/observer_list.h"
 #include "base/time.h"
 #include "base/timer.h"
 #include "chrome/browser/chromeos/input_method/ibus_controller.h"
 
 class GURL;
 
 namespace chromeos {
 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().
 class InputMethodManager {
  public:
   class Observer {
    public:
     virtual ~Observer() {}
 
     // Called when the current input method is changed.
@@ skipping 123 matching lines @@
 
   // Registers a new virtual keyboard for |layouts|. Set |is_system| true when
   // the keyboard is provided as a content extension. System virtual keyboards
   // have lower priority than non-system ones. See virtual_keyboard_selector.h
   // for details.
   // TODO(yusukes): Add UnregisterVirtualKeyboard function as well.
   virtual void RegisterVirtualKeyboard(const GURL& launch_url,
                                        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;
 
   virtual const input_method::ImePropertyList& current_ime_properties()
       const = 0;
 };
 
 }  // namespace input_method
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_MANAGER_H_