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

chrome/browser/chromeos/input_method/mock_input_method_manager.cc

 // 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.
 
 #include "chrome/browser/chromeos/input_method/mock_input_method_manager.h"
 
 namespace chromeos {
 namespace input_method {
 
 MockInputMethodManager::MockInputMethodManager()
     : add_observer_count_(0),
       remove_observer_count_(0),
       set_state_count_(0),
       last_state_(STATE_TERMINATING),
-      util_(whitelist_.GetSupportedInputMethods()) {
+      util_(&delegate_, whitelist_.GetSupportedInputMethods()) {
 }
 
 MockInputMethodManager::~MockInputMethodManager() {
 }
 
 void MockInputMethodManager::AddObserver(
     InputMethodManager::Observer* observer) {
   ++add_observer_count_;
 }
 
@@ skipping 110 matching lines @@
 }
 
 XKeyboard* MockInputMethodManager::GetXKeyboard() {
   return &xkeyboard_;
 }
 
 InputMethodUtil* MockInputMethodManager::GetInputMethodUtil() {
   return &util_;
 }
 
+void MockInputMethodManager::set_application_locale(const std::string& value) {
+  delegate_.set_active_locale(value);
+}
+
+void MockInputMethodManager::set_hardware_keyboard_layout(
+    const std::string& value) {
+  delegate_.set_hardware_keyboard_layout(value);
+}
+
 }  // namespace input_method
 }  // namespace chromeos