Extract a delegate interface from c/b/input_method to permit decoupling from c/b.

chrome/browser/chromeos/input_method/input_method_manager_impl.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_MANAGER_IMPL_H_
 #define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_MANAGER_IMPL_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/observer_list.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/chromeos/input_method/browser_state_monitor.h"
 #include "chrome/browser/chromeos/input_method/candidate_window_controller.h"
 #include "chrome/browser/chromeos/input_method/ibus_controller.h"
 #include "chrome/browser/chromeos/input_method/input_method_manager.h"
 #include "chrome/browser/chromeos/input_method/input_method_util.h"
 #include "chrome/browser/chromeos/input_method/input_method_whitelist.h"
 #include "chrome/browser/chromeos/input_method/xkeyboard.h"
 
 namespace chromeos {
 class InputMethodEngineIBus;
 namespace input_method {
+class InputMethodDelegate;
 
 // The implementation of InputMethodManager.
 class InputMethodManagerImpl : public InputMethodManager,
                                public CandidateWindowController::Observer,
                                public IBusController::Observer {
  public:
+  explicit InputMethodManagerImpl(scoped_ptr<InputMethodDelegate> delegate);
   virtual ~InputMethodManagerImpl();
 
   // InputMethodManager override:
   virtual void AddObserver(InputMethodManager::Observer* observer) OVERRIDE;
   virtual void AddCandidateWindowObserver(
       InputMethodManager::CandidateWindowObserver* observer) OVERRIDE;
   virtual void RemoveObserver(InputMethodManager::Observer* observer) OVERRIDE;
   virtual void RemoveCandidateWindowObserver(
       InputMethodManager::CandidateWindowObserver* observer) OVERRIDE;
   virtual void SetState(State new_state) OVERRIDE;
@@ skipping 32 matching lines @@
   virtual InputMethodUtil* GetInputMethodUtil() OVERRIDE;
 
   // Sets |ibus_controller_|.
   void SetIBusControllerForTesting(IBusController* ibus_controller);
   // Sets |candidate_window_controller_|.
   void SetCandidateWindowControllerForTesting(
       CandidateWindowController* candidate_window_controller);
   // Sets |xkeyboard_|.
   void SetXKeyboardForTesting(XKeyboard* xkeyboard);
 
-  // Creates a new instance of this class. The caller has to delete the returned
-  // object. The caller also have to set a mock CandidateWindowController,
-  // IBusController, and XKeyboard. See the setters above.
-  static InputMethodManagerImpl* GetInstanceForTesting();
-
  private:
   friend class InputMethodManager;
-  InputMethodManagerImpl();
 
   // IBusController overrides:
   virtual void PropertyChanged() OVERRIDE;
   virtual void OnConnected() OVERRIDE;
   virtual void OnDisconnected() OVERRIDE;
 
 
   // CandidateWindowController::Observer overrides:
   virtual void CandidateWindowOpened() OVERRIDE;
   virtual void CandidateWindowClosed() OVERRIDE;
@@ skipping 27 matching lines @@
   // If |current_input_method_id_| is not in |input_method_ids|, switch to
   // input_method_ids[0]. If the ID is equal to input_method_ids[N], switch to
   // input_method_ids[N+1].
   void SwitchToNextInputMethodInternal(
       const std::vector<std::string>& input_method_ids,
       const std::string& current_input_method_id);
 
   void ChangeInputMethodInternal(const std::string& input_method_id,
                                  bool show_message);
 
+  scoped_ptr<InputMethodDelegate> delegate_;
+
   // The current browser status.
   State state_;
 
   // A list of objects that monitor the manager.
   ObserverList<InputMethodManager::Observer> observers_;
   ObserverList<CandidateWindowObserver> candidate_window_observers_;
 
   // The input method which was/is selected.
   InputMethodDescriptor previous_input_method_;
   InputMethodDescriptor current_input_method_;
@@ skipping 38 matching lines @@
   // auto-repeat interval.
   scoped_ptr<XKeyboard> xkeyboard_;
 
   DISALLOW_COPY_AND_ASSIGN(InputMethodManagerImpl);
 };
 
 }  // namespace input_method
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_MANAGER_IMPL_H_